Update xmlrpc-c to new "super stable" version 1.51.04.

Pkgsrc changes:
* Renamed patches to follow new pkgsrc conventions.
* Oddly, the .tgz distfile isn't actually compressed.  Compensate.

Upstream changes:

Release 1.51
============

Released 17.12.26.

Subversion directory release_number/10.51.00.

* Build: Add --disable-abyss-openssl for build environments that
  appear to have Openssl but don't really. (A Pkg-config design
  flaw makes that happen sometimes - you can't control what
  directories it searches for .pc files).
* Windows build: add Visual Studio 2017 project files, fix various
  things broken for Windows in recent updates. Thanks to Maksym
  Veremeyenko.

Release 1.50
============

Released 17.09.28.

Subversion directory release_number/10.50.00.

* Build: fix installation of programs. Introduced in Xmlrpc-c
  1.47 (September 2016).
* Windows build: fix ChanSwitchUnixGetListenName not found.
* Windows build: Add current VS2010express project files.
* Windows build: various fixes. Doesn't necessarily work yet.

Release 1.49
============

Released 17.03.26.

Subversion directory release_number/10.49.00.

* Add program xmlrpc_dumpserver.

Release 1.48
============

Released 16.12.27.

Subversion directory release_number/10.48.00.

* Disable 10M restriction on document size in Libxml2 XML parser.
* Build: Recognize additional Linux "host OS" environments. E.g.
  "linux-uclibc".
* Build: replace BUILDTOOL_CC and BUILDTOOL_CCLD with more
  conventional CC_FOR_BUILD. Add CFLAGS_FOR_BUILD, LDFLAGS_FOR_BUILD.
* Build: Don't attempt to build C++ internal utility module
  cmdline_parser_cpp if we aren't building the C++ libraries. In
  that case, 1) it isn't needed, and 2) the environment probably
  is incapable of compiling C++.
* Build: Use AC_CHECK_TOOL to determine 'ar' command and
  AC_PROG_RANLIB to determine 'ranlib' command to use.
* Build: fix compile failure in build for a system that does not
  have Unicode wide characters (wchar_t).

Release 1.47
============

Released 16.09.25.

Subversion directory release_number/10.47.00.

* Install: fix bug: xmlrpc_expat.pc not installed.
* Install: Add 'uninstall' make target

Release 1.46
============

Released 16.06.29.

Subversion directory release_number/01.46.00.

* Packet stream client: Add option to throw a BrokenConnEx
  exception when transport fails because the server hung up or
  network broke, instead of throwing error.
* Add ServerAbyss::getListenName method, ChanSwitchUnixGetListeName:
  ability to find out on what port your server is listening.
* Packet stream server ('serverPstreamConn'): fix bug: runOnce()
  fails with indication that it was interrupted when the server
  hangs up. Always broken (interruptible RunOnce() was new in
  Xmlrpc-c 1.14 (March 2008).
* Fix compile failure with old OpenSSL that doesn't have
  SSL_ERROR_WANT_ACCEPT. Introduced in Xmlrpc-c 1.45.

Release 1.45
============

Released 16.03.27.

Subversion directory release_number/01.45.00.

* Add SSL/TLS capability via OpenSSL to Abyss server.
* Fix xmlrpc_mem_block accidentally made private in 1.44.
* Build: Remove example and test program usage of XML parser
  facility (<xmlrpc-c/xmlparser.h>), which was made private in
  1.44, so the examples and tools no longer build.

Release 1.44
============

Released 15.12.31.

Subversion directory release_number/01.44.00.

*  C++: Add 'toValue' and 'fromValue' for 64-bit integer
    (xmlrpc_c::value_i8).
*  Memory block utility: Remove xmlrpc_mem_block_init and
    xmlrpc_mem_block_clean. These complicate forward compatibility
    and probably were never used. xmlrpc_mem_block_new and
    xmlrpc_mem_block_free remain to fulfill the same purpose.
*  Remove XML parser (<xmlrpc-c/xmlparser.h>) from external API.
    This is not specific to XML-RPC, so has no business being a
    service of Xmlrpc-c. It is just an abstraction to allow us to
    use various XML parsing libraries (to wit, Expat and Libxml2).
    We don't think it was ever used externally.
*  Build: make install does not create empty man page directory.

Release 1.43
============

Released 15.09.27.

Subversion directory release_number/01.43.00.

* Add xmlrpc_value_new(): deep copy of xmlrpc_value.
* Abyss C++: Add 'terminate' and 'resetTerminate' methods,
  analogous to C Abyss 'ServerTerminate' and 'ServerResetTerminate'.
* Fix bug: infinite recursion if you try to format a floating
  point value that was created from something other than a finite
  number. Creation of a floating point XML-RPC value from something
  other than a number now fails. Introduced in Xmlrpc-c 1.15
  (June 2008).
* Curl client: fix garbage in message where explanation from Curl
  library belongs. Always there, with some Curl libraries.
* Curl client: fix instantaneous timeout with some Curl libraries.
  Introduced in Xmlrpc-c 1.41 (March 2015).
* Curl client: fix 'connect_timeout' transport parameter interpreted
  as 'timeout'. Always broken ('connect_timeout' was new in
  Xmlrpc-c 1.41 (March 2015)).

Release 1.42
============

Released 15.06.28.

Subversion directory release_number/01.42.00.

* AbysssServer: add 'Session::headerValue' and 'Session::getHeaderValue'.
* Fix crash in 'xmlrpc' program under most circumstances. Broken
  in Xmlrpc-c 1.40 (December 2014).
* Packet socket: fix missing parenthesis in error message. Broken
  in Xmlrpc-c 1.25 (December 2010).

Release 1.41
============

Released 15.03.26.

Subversion directory release_number/01.41.00.

* Fix crash: multithreaded client program that uses the Curl XML
  transport and does not specify a Curl timeout transport parameter
  crashes because of signal use inside the Curl library, unless
  the Curl library is one that does DNS lookups with the ARES
  library.
* Make a client that uses the Curl XML transport and does not
  specify a Curl timeout transport parameter wait indefinitely
  for a DNS lookup, or at least until the OS DNS lookup service
  gives up, unless the Curl library is one that does DNS lookups
  with the ARES library. In previous releases, the RPC failed
  after waiting 5 minutes. This was not intended as an enhancement,
  but rather is a side effect of fixing the crash described above.
  But it also adds consistency, since the wait for the DNS lookup
  was always indefinite, ironically, in the case that the program
  specified timeout.
* Add connect_timeout curl transport parameter.
* Packet stream socket: fix: sends corrupted packet when the
  packet contains an ESC character. Always broken. (packet stream
  sockets were new in Xmlrpc-c 1.11 - June 2007).
* Add XMLRPC_TRACE_PACKETSOCKET environment variable: a means of
  tracing communication at the packet socket level.
* Build: Use -pthread on compile and link instead of just linking
  libpthread if compiler is GNU.
* Build: Don't rely on <features.h> to define __BEGIN_DECLS
* Build: don't ignore LDFLAGS in build of Gennmtab. Broken since
  Xmlrpc-c 1.32 (September 2012).
* Many changes to accomodate Mingw. May not work completely yet.
* Build: fix a "recompile with -fPIC" failure in parallel make.
* Build: fix failure with configure --disable-abyss-threads.
  Introduced in Xmlrpc-c 1.38 (March 2014).

Release 1.40
============

Released 14.12.28.

Subversion directory release_number/01.40.00.

* Fix AbyssServer::readRequestBody for chunked bodies. Always
  broken (AbyssServer was new in Netpbm 1.39 (September 2014).
* Add pkg-config files (e.g. xmlrpc.pc)
* Build: fix 'make distclean' so it doesn't leave src/cpp/srcdir
  and src/cpp/blddir.

Release 1.39
============

Released 14.09.27.

Subversion directory release_number/01.39.00.

* Add C++ Abyss server classes. Not documented yet.
* Abyss: with access control, send Access-Control-Allow-Headers
  headers for Content-Type and Content-Length.
* Curl client: Fix bogus "please call curl_muti_perform()" error
  with very old Curl library.
* Abyss: fix bug: RequestAuth() always says not authenticated.
  Broken in 1.10 (March 2007).
* Abyss: fix missing prototype for RequestAuth(). Always broken.
* Install: fix bug: <xmlrpc-c/base64.hpp> not installed.

Release 1.38
============

Released 14.03.25.

Subversion directory release_number/01.38.00.

* Fix bug: When serializing a very large floating point number,
  sender of an XML-RPC message adds some junk after the decimal
  point. With assertion checking enabled, it just crashes. Broken
  in 1.15 (June 2008).
* xmlrpc program: add ability to specify a struct or array RPC
  parameter (struct/ and array/).
* Abyss: fix parsing of URI with %HH escape sequence - always
  said invalid URI. Broken in 1.31 (June 2012).
* Abyss: Fail ServerRun() and ServerRunOnce() if user hasn't done
  ServerInit() instead of trying to make the channel switch accept
  a connection even though it isn't in listening state. Combined
  with the two problems below, this caused POSIX socket servers
  to go into an infinite loop if the user called ServerRun()
  without a prior ServerInit().
* Abyss: Fail ChanSwitchAccept() if user hasn't done ChanSwitchListen()
  instead of trying to make the OS do the accept.
* Abyss: Unix socket: Fix bug: POLLHUP and POLLERR state on
  listening or interrupt socket caused accept function to return
  as if the wait had simply been interrupted.
* Abyss: fix error HTTP response for invalid request line - showed
  wrong request line. Always broken. (The request line in that
  message was new in Xmlrpc-c 1.19 (June 2009).
* Abyss: add details to invalid request line error HTTP response.
* xmlrpc-c-config: add "abyss" target to get just the Abyss
  library - no XML-RPC stuff.

Release 1.37
============

Released 13.12.31.

Subversion directory release_number/01.37.00.

* Abyss server: Fix bug: reported HTTP status 408 (Request timed
  out) for all problems getting the request from the client. Also
  add text detail of problems getting the request from the client
  to the HTTP error response.
* Fix pervasive wild pointer dereference when memory allocation
  of small string fails. Introduced in 1.01 (January 2005).
* Fixes for Windows build problems introduced in 1.33.

Release 1.36
============

Released 13.09.29.

Subversion directory release_number/01.36.00.

*  C++ server: add versions of 'xmlrpc_c::registry::addMethod'
    that takes a simple pointer to the method object, so you can
    use it with automatic and static method objects. Same for
    'xmlrpc_c::registry::setDefaultMethod'.
*  Remove 128M limit on certain memory allocations.
*  Change strategy for overallocating memory - grow blocks no more
    than a megabyte at a time; shrink blocks sometimes.
*  Fix interpretation of dateTime.iso8601 variant with timezone
    information. As broken, it would add up to a second to the
    correct datetime or reject the message claiming that it has
    invalid syntax. Always broken (recognition of the timezone
    variant was introduced in Xmlrpc-c 1.20 (September 2009).
*  'xmlrpc', 'xmlrpc_pstream', 'xmlrpc_parsecall': add ability to
    display dateTime.iso8601.
*  AIX build: various fixes.
*  Windows build: fix reference to _snprintf; broke in Xmlrpc-c 1.34.
*  Windows build: fix lock_windows.c so it compiles. File was new
    in Xmlrpc-c 1.33 and never compiled. Fix girmem.cpp to use
    lock_platform, etc. instead of pthreadx, which was removed in
    Xmlrpc-c 1.33.

Release 1.35
============

Released 13.06.27.

Subversion directory release_number/01.35.00.

* Abyss: fix wrong peer address with Unix socket channel made
  with ChannelUnixCreateFd(). Always broken (ability to get peer
  address was added in Release 1.07 (October 2006)).
* JSON value formatting: Fix buffer overrun.
* Build: build 'configure' with Autoconf 2.69 (previously built
  with 2.67).

Release 1.34
============

Released 13.03.30.

Subversion directory release_number/01.34.00

* Build: fix libpthread dependency bug introduced in 1.33.00.
* Test program build: include <unistd.h> instead of <sys/unistd.h>.

Release 1.33
============

Released 12.12.27.

Subversion directory release_number/01.33.00.

* Make xmlrpc_value thread-safe (after construction, when the
  only modification allowed is to the reference count).
* Client with Curl transport: fix bug which disables interruption
  unless you register a progress function for the transport.
  Introduced in 1.24 (September 2010).
* Add xmlrpc_init(), xmlrpc_term().
* Server: fix method add failure when signature string contains
  "I" (for 64 bit integer). Always broken (64 bit integer type
  was new in Xmlrpc-c 1.07 (October 2006)).
* libxml2: fix memory leaks. Always broken (ability to use libxml2
  was added in Release 1.00 (October 2004)).
* Abyss: Fix memory read through wild pointer upon interruption
  of server. Probably harmless.
* Windows build: rename DLL configurations to avoid ambiguity
  between DLL and static library builds.

Release 1.32
============

Released 12.09.28.

Subversion directory release_number/01.32.00.

* Abyss server: terminate sooner when the HTTP request handler
  requests shutdown. Formerly, after e.g. a 'system.shutdown'
  RPC, the server waited for the persistent TCP connections,
  including the one in which the RPC transaction was transported,
  to end (typically 15 seconds later). Now, it interrupts channel
  reads and writes on all connections so they will notice they
  are supposed to wind up and do so.
* Abyss server: add basic server operation tracing with
  ABYSS_TRACE_SERVER environment variable.
* Abyss server, XML-RPC Abyss server: add control of number of
  simultaneous connections and OS connection backlog.
* Use random salt in hash values in built-in XML parser. Without
  this, a malicious user can create a putative XML-RPC call or
  response that takes a long time to parse, thus using excessive
  CPU resources. This code is adapted from true Expat's fix for
  CVE-2012-0876 to XML-RPC's fork of Expat, by Tyler Hicks
  <tyhicks@canonical.com>.
* Server: Fix crash when string value in parameter list contains
  invalid UTF-8. Broken in 1.18 (March 2006). Diagnosed by Stephen
  Hansen, Programmer <stephen@tlo.com>.
* Fix crash in built-in XML parser which causes a memory leak
  when it can't get additional memory (re-allocation fails). This
  code is adapted from true Expat's fix for CVE-2012-1148 to
  XML-RPC's fork of Expat, by Tyler Hicks <tyhicks@canonical.com>.
* Build: fix build tree != source tree bug: no transport_config.mk.
  Broken in 1.10 (March 2007).
* Windows build: properly export client class in xmlrpc-c_client++.dll.
  By Maksym Veremeyenko <verem@m1stereo.tv>
* Build: don't build tools by default. Broken in 1.30 (March 2012).
* Build: fix up how LDFLAGS, CFLAGS, and CXXFLAGS (make variables)
  are used. Deprecate LADD and CADD, which were meant for the
  same thing.
* Build: fix make clean so it cleans src/cpp.
* Build: fix so build of test programs does not fail if you didn't
  build client facilities.
* Build: fix 'check'. By Tyler Hicks <tyhicks@canonical.com>.

Release 1.31
============

Released 12.06.30.

Subversion directory release_number/01.31.00.

* Abyss XML-RPC server: make xmlrpc_server_abyss() fail instead
  of exiting program when it can't bind and listen.
* Abyss server: Add ServerInit2() - fails instead of exiting
  program if it can't bind and listen.
* Curl client XML transport: when server sends garbage instead
  of valid HTTP response, put the garbage (which is often an
  error message) in the error message.
* Add xmlrpc_read_datetime_8601(),
  xmlrpc_c::value_datetime::iso8601Value().
* xmlrpc_c::value_datetime: add ability to construct from and
  cast to xmlrpc_datetime.
* Fix crash due to bogus memory free when xmlrpc_parse_value()
  fails. Broken in 1.07 (October 2006).
* Abyss server: Fix bug: rejects request with colons in the host
  name (e.g. IPv6 address form "[::1]") as invalid.
* Curl client XML transport: Fix error message when servers
  responds with non-HTTP garbage. Used to say HTTP response code
  is zero.
* Curl client XML transport: fix occasional crash with modern
  Curl introduced in 1.28.
* Abyss server: Fix crash when client doesn't specify access
  control. Broken in 1.25 (December 2011).
* Abyss server: Improved formatting of IPv6 addresses for Abyss
  "channel info.". Also no more build-time dependency on nonstandard
  s6_addr16, introduced in 1.29.
* Windows: Remove #include <windows.h> from public header file
  to avoid conflicts with other inclusions in user's program that
  include other variations of <windows.h>. By Maksym Veremeyenko
  <verem@m1stereo.tv>
* Install: fix install of man pages to wrong directory. Broken
  in 1.18 (March 2009).
* Windows build: Fix winsock2 conflict.

Release 1.30
============

Released 12.03.31.

Subversion directory release_number/01.30.00.

* Add ability for Abyss and XML-RPC Abyss server to listen on a
  particular interface (IP address).
* Abyss XML-RPC server: Fix bug in access control expiration.
* xmlrpc, xmlrpc_pstream client programs: fix bug in display of
  unprintable ASCII as \xHH: shows \xff where it should be
  something else.
* Windows Abyss: fix 16 byte per thread memory leak. Thanks Angelo Masci.
* Build: add missing include of <ostream> to base.hpp. Broken in 1.26.
* Build: remove --enable-tools option added in 1.18. User can
  just do 'make -C tools ' or 'make all' to get that.

Release 1.29
============

Released 11.12.31.

Subversion directory release_number/01.29.00.

* Abyss: Add ChanSwitchUnixCreateIpV6Port: ability to listen for
  client connections on an IP Version 6 TCP port.
* Curl client XML transport: Add 'referer' option.
* Improved invalid UTF-8 error message.
* xmlrpc client program: fix bug: doesn't accept b/f to mean
  boolean false. Broken since 1.07.
* Fix crash when sending structure with a member value too large.
  Introduced in 1.21.
* Fix Windows build, undefined macro XMLRPC_S_IWUSR introduced in 1.28.

Release 1.28
============

Released 11.09.27.

Subversion directory release_number/1.28.00.

* Curl client: add "gssapi_delegation" option. Needed in some
  cases with newer Curl libraries to get back old function.
* Fix bug: infinite loop parsing XML when a string or character
  data is longer than 1K in UTF-8. Introduced in 1.12.
* Curl client: fix libcurl version in user-agent header. Always
  broken (user-agent function added in Release 1.03).
* Client curl transport: fix bug: multiple authentication methods
  doesn't work; only one of them takes effect. Always broken.
* C++ Curl client: fix bug: ignores proxy Curl transport options.
  Always broken.
* Windows: Add VS2008 64 bit static library building. Remove MSVC
  6 project files. From now on, VS2008 will be the standard. The
  single set of project files build static and DLL, 32 bit and
  64.
* Accomodate newer libcurl, which does not have <curl/types.h>.
* Fix per-connection memory leak in libwww client XML transport.
  Present since the beginning.
* Build: fix some parallel make forced ordering.
* Build with --disable-abyss-threads: include <sys/wait.h> instead
  of <wait.h> in Abyss thread_fork.c.
* Build of test programs: Fix "struct sockaddr_in" not defined
  in server_pstream.cpp.
* Build: fix undeclared struct timespec.
* Build: Work with systems that don't define S_IREAD in <sys/stat.h>.
* C++: Reorder arrayValueSlice() and arrayValueAvrray() definitions
  in <xmlrpc-c/base.hpp> to please Clang.

Release 1.27
============

Released 11.06.27.

Subversion directory release_number/1.27.00.

* Many changes to accomodate Mingw. May not work completely yet.
  By Maksym Veremeyenko <verem@m1stereo.tv>.
* Windows build: update non-DLL project files to accomodate recent
  changes to tree. By Maksym Veremeyenko <verem@m1stereo.tv>.
* Windows build: add missing DLLEXPORT to some class declarations
  so user programs build. By Maksym Veremeyenko <verem@m1stereo.tv>.
* Build: Fix detection of libwww, broken in 1.24.
* Build: Don't use trailing comma in enum; not accepted by some
  C++ compilers.
* Build: Add a user-defined default constructor for class callInfo
  to avoid compilation failure with recent GNU compilers.
* Mac OS X build: include -install_name on library link so
  dependents can find it automatically. Thanks Joshua Root
  (jmr@macports.org).

Release 1.26
============

Released 11.03.26.

Subversion directory release_number/1.26.00.

* Add output operator (operator<<) for xmlrpc-c::value::type_t.
* JSON serializer: eliminate trailing commas that Internet Explorer
  doesn't like. Thanks Bo Lorentzen <bl@lue.dk>.
* JSON serializer: improve human readability of JSON. Thanks Bo
  Lorentzen <bl@lue.dk>.
* Fix JSON integer parsing and formatting broken in 1.25.
* Build: Fix prototype/definition mismatch in libwww.cpp with
  some compilers (e.g. Solaris).
* Build: Fix linking of xml-rpc-api2cpp with some linkers (e.g. Solaris).

(he)