Pull up following revision(s) (requested by msaitoh in ticket #1093):

sys/dev/pci/if_wmreg.h: revision 1.120
sys/dev/pci/if_wmvar.h: revision 1.46
sys/dev/pci/if_wm.c: revision 1.686
sys/dev/pci/if_wm.c: revision 1.687
sys/dev/mii/inbmphyreg.h: revision 1.20
sys/dev/pci/if_wm.c: revision 1.688
sys/dev/pci/if_wm.c: revision 1.689

s/ressource/resource/. Found by knakahara.

  Add new flag named WM_F_CRC_STRIP and use it. No functional change.

  This change also sets the RCTL_SECRC bit on I211 but it doesn't change
the behavior because I211 always strips CRC like I35[04] and I210.

  Add a workaround for jumbo frame on PCH2 and newer. Tested by chs@.

- Add wm_lv_jumbo_workaround_ich8lan() and use it. From FreeBSD.
  XXX For KUMCTRLSTA_OFFSET_HD_CTRL register modification, it's doubtful.
  FreeBSD and Linux do the same thing that they set the same value on both
  jumbo frame's enable case and the disable case. It seems the default value
  is 0x0b0c and it's not changed on the enable case, so it might be a bug
  on the enable case or the modification is not required.
- Rename I219_UNKNOWN1 to I82579_UNKNOWN1.
  Use 12K for packet buffer for jumbo frame on PCH2 and newer.

XXX Note that Linux Use 14K.

(martin)

make(1): add tests for spaces in condition functions

(rillig)

make(1): remove debug output from counter tests

Now that the tests work as intended, the debug information is no longer
necessary.  It was only intended to track down the cause of the
unexpected behavior.

(rillig)

make(1): fix unexpected behavior in ::= variable modifier

Previously, the ::= modifier had returned an error value, which caused
the variable expression to be preserved.  This behavior was not useful
in this case; it had only been intended to be used for undefined
variables.

To fix it, distinguish between parse errors, undefined variables and
regular empty strings.

(rillig)

make(1): merge duplicate code for delayed commands

(rillig)

fix syntax. it only wants the number of columns.

(nia)

fix syntax. ctwm does not use ,

(nia)

Add a limit for auth at a test for invalid account

(yamaguchi)

Fix typo

(yamaguchi)

Readability of a comment

(skrll)

make(1): inline local variable delim

Now that ParseModifierPart generates the error message itself, there is
no need to keep this variable around since it is read a single time.

(rillig)

make(1): add variant of the counter test

I had expected that using the ::+= modifier instead of the ::= modifier
would work, since the assignment modifier for COUNTER no longer contains
a reference to itself.  But instead of ending up at 4, the counter even
goes up to 6.

(rillig)

make(1): fix assertion failure in -j mode with .END node

There had been two separate global variables for the .END node, and in
parallel mode, only the one in jobs.c was initialized.

The code in JobRun heads over to Compat_Make without calling Compat_Run
first, which left the variable ENDNode uninitialized.

(rillig)

ifwatchd: Check link state if no media is supported on initial ups.

We can check this via SIOCGIFDATA and ifi_link_state.

(roy)

ifconfig: teach carrier test about ifi_link_state from SIOCGIFDATA

Because not all interfaces support media.

(roy)

Move the compile-time assert outside of the __MUTEX_PRIVATE guard.

(thorpej)

Move the simple lock used for spin mutexes into the sub-structure that
contains the spin lock IPL field.  This shrinks kmutex_t to sizeof(uintptr_t)
on Alpha.

This should have been done in rev 1.3 when the lock ID field was removed,
but better late than never, I guess.

(thorpej)

Define some additional Cchip registers.

(thorpej)

avoid stippling effect in titlebars

(nia)

remove getentropy

(nia)

remove getentropy bits

(nia)

remove getentropy bits

(nia)

add menu entries for workspace occupation

(nia)

replace default ctwmrc by mine from tech-x11

(nia)

make(1): condense code in Var_Subst

(rillig)

make(1): prepare Var_Subst for proper error handling

Returning a VarParseResult instead of a string makes it possible to let
the error bubble up, until it reaches the main expression.

(rillig)

make(1): fix unnecessary length limitation for -v option

(rillig)

make(1): add test for unintended double expansion of deferred commands

(rillig)

make(1): remove obsolete fix for PR bin/29985

(rillig)

make(1): add test for .for loop from PR bin/29985

(rillig)

Tickets #1091 and #1092

(martin)

Pull up following revision(s) (requested by skrll in ticket #1092):

sys/arch/arm/arm/undefined.c: revision 1.67

Allow an undefined instruction to use lr (r14) as Rt. New gcc emits this
with TPIDRURO read.

Not sure why the exception handler cares if sp or pc are used as Rt

(martin)

Pull up following revision(s) (requested by christos in ticket #1091):

sys/kern/uipc_socket.c: revision 1.291
sys/kern/uipc_usrreq.c: revision 1.199
sys/kern/uipc_socket2.c: revision 1.138

add socket info for user and group for unix sockets in fstat.

(martin)

make(1): prepare error handling in nested variable expressions

Having ParseModifierPart return VarParseResult allows to report the
errors from nested variable expressions.

(rillig)

make(1): handle errors about missing delimiter in a single place

(rillig)

make(1): move ParseModifierPart further down in the code

This way, it can access the ApplyModifierState, which will be used in a
follow-up commit to reduce the code duplication around the error
handling for missing delimiters.

(rillig)

update the default xsm session to ctwm/uxterm

(nia)

Keep a list of all partition tables from which we have deleted partitions
and make sure we update those partition tables when writing partitions,
even if no install related partition remains on them.

(martin)

Changes to make MPSAFE interrupts work on Alpha:

- Remove the ipl argument to scb_set() and the associated array of
  "mpsafe" booleans initialized based on the ipl.  It was bogus
  anyway; all IPL_{BIO,NET,TTY}, etc. values are aliases of IPL_VM,
  and for all practical purposes, there is really only one device
  interrrupt level on Alpha anyway.  Intead, we now treat all dispatches
  from the SCB vector table as MP-safe, and it is now the handler for
  that vector who is responsible for acquiring the KERNEL_LOCK if needed.

- Update the direct interrupt vector handlers in jensenio and TURBOchannel
  to acquire the KERNEL_LOCK.

- Introduce a new ALPHA_INTR_MPSAFE flag, and add a flags argument to
  alpha_shared_intr_establish().  When it is set, indicate that the
  handler is MP-safe.  Update alpha_shared_intr_dispatch() to pay
  attention and acquire the KERNEL_LOCK (or not) as indicated.

- Re-factor all of the PCI interrupt handling, providing "generic PCI"
  "PCI interrupts through ISA IRQs" implementations to significantly
  reduce code duplication.  Supplement the PCI chipset tag with more
  info to facilitate this, and make the PCI interrupt-related routines
  take a pci_chipset_tag_t argument rather than a void * argument.

- Because PCI interrupts on KN8AE are dispatched directly from the
  SCB, provide a wrapper for non-MPSAFE interrupt handlers that
  acquires the KERNEL_LOCK.

- Change the pci_intr_handle_t type to be a struct rather than an
  integer type in order to catch any direct use of it as a value.
  Add a set of functions to interact with pci_intr_handle_t, including
  setting interrupt flags.

- Implement pci_intr_setattr() so that the PCI_INTR_MPSAFE attribute
  can be set on a pci_intr_handle_t.

- While I'm here, make all of the MI PCI back-end operations call
  through real functions rather than hopping directly through function
  pointers in the chipset tag.

This change looks a lot bigger than it really is because of the re-factor
in the plethora of model-specific PCI interrupt back-ends.  The KN8AE,
KN300, and T2/T3/T4 (Sable) are largely un-changed.

(thorpej)

Typo in comment

(martin)

turn off the ctwm "welcome" screen

while this is nice for Branding(tm), it adds a slight delay to startup,
which is slightly annoying, and a departure from how we've done things
previously.

(nia)

spawn ctwm in the default xdm Xsession

(nia)

make the default xinitrc a bit nicer

spawn only one xterm in unicode mode and use ctwm instead of twm

ctwm is a backwards compatible fork of twm that includes some extra
features like virtual desktops

(nia)

ifconfig: Report link state even if media is not supported

For AF_LINK addrs from getifaddrs(2), ifa_data is struct if_data.
This in turn holds ifi_link_state which we can use to report
link status if the interface does not support media where it's normally
reported.

Based on OpenBSD.

(roy)

In the concrete partitions editor, after deleting the last partition move
the menu selection to the "add a partition" entry (instead of the sentinel
line which is not an active menu entry).

(martin)

PR kern/55674:
move name space availability check from ld_nvme.c:ld_nvme_attach()
to nvme.c:nvme_rescan().
this avoids allocation of ld(4) instances for every possible
name space, even if it is not usable. it also reduces the device
node flood generated from that strategy.

(kardel)

When adding a new partition in the concrete partition editor, make sure
to set a pointer to the partition table interface in the new entry.
Otherwise we may end up not writing back the partitions at all, leading
to further fallout later.
Receipe to reproduce the issue from Frederic Fauberteau, thanks!

(martin)

make(1): remove remaining references to VAR_JUNK and VAR_KEEP

(rillig)

make(1): move VAR_JUNK and VAR_KEEP away from VarFlags

These two flags have nothing to do with a variable.  They are only used
while evaluating a variable expression.

While here, rename the flags and make their documentation more precise.

(rillig)

make(1): rename VarParseErrors to VarParseResult

The name VPE_OK was confusing since it was not an error at all.

(rillig)

make(1): extract common code from the ApplyModifier functions

(rillig)

make(1): fix type of global variable 'create'

(rillig)

make(1): use fine-grained type names for lists and their nodes

This is only intended to help the human reader.  There is no additional
type safety yet.

(rillig)

alpha: GENERIC.MP is no more

(snj)

make(1): rename type Path to CachedDir

The word "path" is commonly used either as an abbreviation for pathname
(a string consisting of several directory or file names) or as an
abbreviation for search path (a list of directory names used for
searching files), but not for a single directory.

(rillig)

Remove duplicate word in a comment

(kamil)

Fix weird spelling, refresh date.

(jakllsch)

Add new RTLD test file for r_debug

New tests:
- self
- dlopen

Both check whether the r_debug structure seems to be well-formed, without
and with a dlopen(3) call.

(kamil)

swp is only useful on armv7 uni-processor systems.

we will need the emulation if we want to run old binaries..

(mrg)

Correct r_ldbase valuse

It shall be the relocbase value, not linkmap.

(kamil)

turn on CPU_CONTROL_SWP_ENABLE.

this allows armv[67] systems to use 'swp' and 'swpb' instructions,
which means they can run armv[45] software.

arm recommends ldrex/strex for armv6 and newer, and it is not
present in armv8 at all or some armv7.  we emulate it on armv8 and
need to add emulation for the some armv7.  using the hardware is
going to be faster, so, enable this path too.

ok jmcneill.

(mrg)

fix missing deps for cow-fs_dir* and cow-fs_ops*.

should fix build issues reported on current-users.

(mrg)

the previous fix for PR 55366 in uvm_amap.c 1.124 was incomplete:
- amap_adjref_anons() must also ignore AMAP_REFALL when updating
  the ppref, not just when deciding whether or not to initialize ppref.
- UVM_EXTRACT_QREF relies on AMAP_REFALL to work properly,
  and since we can't use AMAP_REFALL then we can't use QREF either.

(chs)

do not use WEP

(nia)

make(1): add specific typedefs for lists

These typedefs are only intended to help human readers, they do not
provide any type-safety.  They also make the pointers explicit, which
had been hidden before by the typedef for Lst and LstNode.  Typing a few
'*' is less work than finding out which of the many types are pointers
and which aren't.

In meta.c, the variable "ln" served two completely different purposes,
which have been split again.  Register allocation is the job of the
compiler, not of the human source code reader.

(rillig)

ld.so(1): Upgrade r_debug to the protocol version 1.

(kamil)

Upgrade the SVR4 RTLD r_debug protocol to version 1

Changes:
- Add a new field r_ldbase in the r_debug struct.
- Set r_version to 1.

This harmonizes the support with OpenBSD and Linux.
FreeBSD uses version 0 (or no version).
Solaris uses version 2 that is not implemented elsewhere and relies on
SVR4 specific design and interfaces.

Update the code comments as r_debug and link_map is used by other software
than GDB, namely: sanitizers, rump, LLDB.

(kamil)

Correct range for ISO week conversion

The %V conversion range for strptime(3) should match the strftime(3)
conversion range. A valid ISO week is 1-53.

(ginsbach)

Add MLINKS for empb.4

(kim)

also allow uxterm to be used in the default xinitrc

(nia)

Allow an undefined instruction to use lr (r14) as Rt. New gcc emits this
with TPIDRURO read.

Not sure why the exception handler cares if sp or pc are used as Rt

(skrll)

Add MLINKS for empb.4

(kim)

Define CTWM when building xinit

This will allow ctwm to eventually be used in the default xinitrc.

(nia)

- Print chip revision. From OpenBSD.
- Rename RTK_HWREV_8168_SPIN[123] to RTK_HWREV_8168'B'_SPIN[123].
  Same as other *BSDs.
- Rename RTK_HWREV_8168G_SPIN4 to RTK_HWREV_8411B. Same as other *BSDs.
- Add definition of RTK_HWREV_8169_8110SCE.

(msaitoh)

make depend files also depend on the generated headers.

fixes build issues.

(mrg)

make(1): clean up VarParseErrors, for proper error handling

Having a pure bitset was wrong.

Instead, there are several alternatives (parse error, eval error, undef
error), and each of them can either have an error message printed (good)
or not (bad).  In addition, there are VPE_OK for successful expression
evaluation and VPE_UNKNOWN (only used during migration to the correct
error handling scheme).

(rillig)

make(1): run tests with absolute filenames as well

The tests varname-dot-parsedir and varname-dot-parsefile had been broken
before if they were run with the "-f $PWD/$test.mk" option.  This way of
running the tests is used by FreeBSD.

(rillig)

make(1): fix tests for .PARSEDIR/.PARSEFILE

The output of these tests previously depended upon whether the test
makefile was specified as relative or as absolute path.  In NetBSD, it
is specified as relative path, in FreeBSD as absolute path.

Adjust the expected output to hide this difference; in the .rawout files
it is still visible.

(rillig)

make(1): clean up Arch_ParseArchive

This code is so seldom used that it's not necessary to squeeze out every
little bit of performance.  It's more important for the code to be clear
and simple.

(rillig)

Refine the documentation of r_debug

Obtained from OpenBSD link.h r.1.15.

(kamil)

- rectify nonsense and bugs around statistics counter managment.
- scoop up counter values in one second interval comsolidating with phy_tick.
- reformat register definitions for ease to see.

(nisimura)

Effectively disable the AMAP_REFALL flag because it is unsafe.
This flag tells the amap code that it does not need to allocate ppref
as part of adding or removing a reference, but that is only correct
if the range of the reference being added or removed is the same
as the range of all other references to the amap, and the point of
this flag is exactly to try to optimize the case where the range is
different and thus this flag would not be correct to use.
Fixes PR 55366.

(chs)

zero out the sockaddr, so that the length it guaranteed to be 0.

(christos)

regen

(christos)

guard statistics gathering callout with #ifdef

(nisimura)

Add symbol entries for the missing signal functions for the benefit of
autoconf. Autoconf compiles simple programs like:
    char symbol();
    int main() { return symbol(); }
To check if the symbol is present. This makes it happy.
Another way our symbol renaming breaks things.
This fixes gdb native build, which does not find sigprocmask otherwise
and fails to build because it finds pthread_sigmask() and not sigprocmask()!

(christos)

be more cautious about error exit path. nuke unused variables

(nisimura)

regen

(christos)

disable -Wstack-usage since some targets like vax don't support it

(christos)

undo previous, it was correct

(christos)

Use pmap_growkernel(VM_KERNEL_VM_BASE) rather than pmap_virtual_space to
work out what to map initially.

XXX could do better mapping the kernel and modules more accurately

(skrll)

switch amd64 to gdb-11

(christos)

Don't read data from sections without contents on NetBSD. We end up reading
0's and svr4_exec_displacement read phdrs_target successfully, and we
end up in the rabbit-hole of 0 displacement for pie binaries and then we
can't load our shared libaries from the core file.

(christos)

KNF (sort #includes and remove duplicate sys/cpu.h)

(skrll)

Adjust fdt_rescan to speed up booting by significantly reducing the number
of times that we call config_match. Now we only call it 11 times per node.
Previously, each scan pass of an unconfigured device triggered 11 calls to
config_match, and adding a new simplebus causes the scan to restart, so
we are avoiding potentially hundreds of calls to config_match per node now.

(jmcneill)

G/C uvm_pagezerocheck

(skrll)

add "distsets" alias for "distribution sets".

(mrg)

Ticket #1608

(martin)

Tickets #1089 and #1090

(martin)

Pull up following revision(s) (requested by jakllsch in ticket #1090):

sys/dev/pci/virtio_pci.c: revision 1.13

Ensure MSI-X is disabled if allocation of MSI-X interrupts fail.

The virtio device config space moves out from under us when MSI-X
remains enabled, and/or INTx interrupts are masked if we don't ensure
this.

This un-breaks virtio devices that run out of MSI-X interrupts.
Particularly a problem on uniproc x86, where there are only 8 or 9
vectors available, allowing for only about 4 virtio devices to use
MSI-X.

(martin)

Pull up following revision(s) (requested by jakllsch in ticket #1608):

sys/dev/pci/virtio_pci.c: revision 1.12

Ensure interrupt handles buffer is zeroed on allocation
Prevents crashes trying to deallocate interrupts at shutdown.

Found by kim and mlelstv, confirmed by me

(martin)

Pull up following revision(s) (requested by jakllsch in ticket #1089):

sys/dev/pci/virtio_pci.c: revision 1.12

Ensure interrupt handles buffer is zeroed on allocation
Prevents crashes trying to deallocate interrupts at shutdown.

Found by kim and mlelstv, confirmed by me

(martin)

Talk Like a Pirate Day was yesterday.

(gson)

remove mis-merged code and make the auxv core offset 0. Now loading auxv
from core files works.

(christos)

The lid of the main thread == pid now. Should we fix the kernel to return
this? Now debugging live programs work.

(christos)

fix to work on big endian

(ryo)

Possible fix for hangup on Jensen mentioned in PR/36628.

According to comments in Linux drivers/tty/serial/8250/8250.h,
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/tty/serial/8250/8250.h?h=v5.8#n242
the driver has to set OUT1 and OUT2 lines for "some ALPHA"
otherwise "the machine locks up with endless interrupts."
Note OUT2 (MCR_IENABLE) is set in MI com_attach_subr()
so we have to set OUT1 (MCR_DSR) in the MD attachment.

The information was notified from Miod Vallat.

(tsutsui)

Define VM_KERNEL_VM_{BASE,SIZE} for aarch64 and remove an #ifdef in
fdt/platform.h

NFCI

(skrll)

Make __md_palloc pmap agnostic (think sys/uvm/pmap)

(skrll)

Ticket #1606

(martin)

Tickets #1086 and #1087

(martin)

Pull up following revision(s) (requested by nia in ticket #1087):

external/mit/xorg/lib/libX11/Makefile.libx11: revision 1.20
external/mit/xorg/lib/libX11/Makefile.libx11: revision 1.21

libx11: Dynamically load unversioned libxcursor shared object
the version number is wrong for NetBSD, should be libXcursor.so.2

someone pointed out it makes sense to load the exact libXcursor version

(martin)

Pull up following revision(s) (requested by nonaka in ticket #1606):

sys/dev/hid/hidkbdmap.c: revision 1.11 (patch)
(applied to sys/dev/usb/ukbdmap.c)

for jp keymap map also scan code 49 to right bracket to handle ARCHISS model
PR kern/55608 by Shinichi Doyashiki

(martin)

Pull up following revision(s) (requested by nonaka in ticket #1086):

sys/dev/hid/hidkbdmap.c: revision 1.11

for jp keymap map also scan code 49 to right bracket to handle ARCHISS model
PR kern/55608 by Shinichi Doyashiki

(martin)

Update the Proxmox comment with link to their bugzilla

(kim)

Note several recent Alpha improvements.

(thorpej)

GENERIC.MP is no more.  GENERIC defaults to MULTIPROCESSOR now.

(thorpej)

Enable MULTIPROCESSOR by default, but disable it in the RAMDISK
and INSTALL kernels to save some space.

(thorpej)

Enable __HAVE_FAST_SOFTINTS and garbage-collect the #ifdefs.

(thorpej)

CDN, CRTP, FTTH

(ginsbach)

- The Alpha fast-soft-intrs implementation supports 2 soft interrupt levels,
  so in exception_return() ensure we clear ineligible-at-new-IPL softint
  bits from the SSIR, otherwise we could loop forever in the following
  scenario:

processing softnet -> clock interrupt -> schedule softclock

- If the softint thread blocks, it's possible to bounce back through
  the softint return trampoline at something other than IPL_HIGH.  This
  is not a problem other than it's contrary to what alpha_softint_dispatch()
  expect, so make alpha_softint_return() go to IPL_HIGH before it does
  anything else.

These two fixes make fast-soft-interrupts work on Alpha.

(thorpej)

Move softintr bits into <machine/intr.h> and define ALPHA_ALL_SOFTINTS
for locore.s

(thorpej)

minor adaptatioons to new radeonfbreg.h

(macallan)

update register definitions from xsrc/external/mit/xf86-video-ati/
merge in enough of the local changes to make radeonfb compile
tested on various macppc boxes

(macallan)

Provide better guesses for bsd systems, otherwise we end up calling
recursively opendir and gettimeofday until we run out of stack...

(christos)

arp tests: Delete ARP entry after failed ping test

As it might hang around in WAITDELETE for a few seconds.

(roy)

Revert scsiconf.c 1.288, it only worked for LUN 1.

vioscsi(4) now sets PQUIRK_FORCELUNS, which fixes the original issue for
all LUNs.

To-do: should issue REPORT LUNS and use the information it returns to
probe LUNs in an optimized way.

(jakllsch)

Probe all LUNs on vioscsi(4) until scsi(4) can do REPORT LUNS.

(jakllsch)

delint

(christos)

add optimize attribute

(christos)

mention strtod hack

(christos)

PR/55668: Martin Husemann: Disable optimization to avoid infinite loop.
Also bring in a few changes from the most recent gdtoa code (not relevant
to the bug).

(christos)

Do pppoe_timeout() in thread context

OKed by knakahara@n.o
fix port-amd64/55661

(yamaguchi)

Use callout_setfunc and callout_schedule

(yamaguchi)

Remove superfluous Ed.

(wiz)

Correct an incorrectly quoted (unquoted, but should be) example used in
the "local" built-in command description (pointed out by mrg@ via uwe@ in
private e-mail).

Add a description to the export command of why this quoting is required,
and then refer to it from local and readonly (explained in export as that
one comes first).

Note that some shells parse export/local/readonly (and often more) as
"declarative" commands, and this quoting isn't needed (provided the
command name is literal and not the result of an expansion) making
X=$Y type args not require quoting, as they often don't in a regular
variable assignment (preceding, or not part of, another command).
POSIX is going to allow, but not require, that behaviour.  We do not
implement it.

(kre)

- Give lwp0 the same kernel thread backstop as all of the others get
  in cpu_lwp_fork().
- Add a bunch of comments to lwp_trampoline() to explain what's going on.
- In alpha_softint_switchto() tweak how we save the RA in the stack frame.

(thorpej)

- Add exception_return() to the list of trap vector symbols, which will
  enable us to trace back through an exception if the fault happens
  during the exception return.
- Identify and report the kernel thread backstop when back tracing
  kernel threads.

(thorpej)

Rather than having exception_return() at the root of the call graph for
kernel threads, provide a backstop that will prevent them from ever
accidentally trying to return to user space.

(thorpej)

Rather than having exception_return() at the root of the call graph for
kernel threads, provide a backstop that will prevent them from ever
accidentally trying to return to user space.

(thorpej)

Fix entering the kernel debugger when MULTIPROCESSOR is enabled; the
arguments to alpha_debug() were getting clobbered by the call to
cpu_pause_resume_all(), but they need to be passed along to ddb_trap().

(thorpej)

Use alpha_pal_swpipl() directly instead of splhigh()/splx(), do avoid
soft int processing while dealing with entering / leaving the debugger.
Soft ints will be correctly handled during exception_return().

(thorpej)

Fix waiting for PIDs on stop.

Fix expansion of positional parameters. Also move the local
variable declaration to more apropriate place.

(otis)

fix build.

(christos)

commit generated man pages

(christos)

Ensure MSI-X is disabled if allocation of MSI-X interrupts fail.

The virtio device config space moves out from under us when MSI-X
remains enabled, and/or INTx interrupts are masked if we don't ensure
this.

This un-breaks virtio devices that run out of MSI-X interrupts.
Particularly a problem on uniproc x86, where there are only 8 or 9
vectors available, allowing for only about 4 virtio devices to use
MSI-X.

(jakllsch)

Fix word-o of function name in comment

(jakllsch)

Ensure interrupt handles buffer is zeroed on allocation

Prevents crashes trying to deallocate interrupts at shutdown.

Found by kim and mlelstv, confirmed by me

(jakllsch)

put gnulib stuff under gnulib/ because things import "gnulib/config.h"

(christos)

Generate ctf-error.h

(christos)

Add new libraries

(christos)