star: Update to 1.6.1nb6

Added SPECIAL_PERMS for config file (no more "wrong permissions"
warning if installed as nonprivileged user.

Changes from AN-2020-03-11:
- configure: The autoconfiguration now has an enhanced test for waitid()
that was needed since Mac OS is still not POSIX compliant and returns 0
instead of the signal number for a process that has been killed by a
signal. MacOS did pass the POSIX certification as a result of a missing
test for that problem.

Since every vertified OS needs to run an annual refresh the
certification with recent versions of the test, I guess that
Mac OS (Catalina updates) may become more compliant witin a year.

- psmake: The portable bootstrap compile environment for smake missed
a symlink for unsetenv.c to libschily since the related code has been
moved to libschily in 2018. This prevented compilation on IRIX.

Thanks to Kazuo Kuroi for reporting

- librmt: the code has been modified to allow librmt to be finally
compiled without a need to link against libschily. This makes it
easier to link ufsdump/ufsrestore from OpenSolaris against librmt.

A call to errmsg() was replaced by a call to errmsgno() that has
a private implementation in librmt already.

- librmt: the man pages have been modified to make sure that man2html
is able to correctly create links to referenced other man pages.

- libstreamar: streamarchive.4 now mentions that the POSIX.1-2001
tar extensions are based on a Sun Microsystems proposal from 1997.

- star: the man page now mentions that it is preferred to use the
source from the schilytools instead of a star specific release.

Changes from AN-2020-03-27:

Changes from AN-2020-04-18:
- librmt: A few small enhancements have been added to the man pages.
This was a result of a code review for SchilliX-ON by
Eric Ackermann

- star: The unit tests port/lpath.sh did not work on IRIX because
the "rm" command on IRIX is buggy and does not remove long path
names (path names longer than PATH_MAX). We now use a recursive
shell function to remove the long path.

- star: The new shell function in port/lpath.sh did crash Linux in
case that /bin/sh is "dash". "dash" is not POSIX compliant and
fails to support arbitrary long working directory names. Whe therefore
try to run the long path removal with "bosh", or at least "bash".
Only if none of both is present, we fall back to the system default
shell "/bin/sh".

Changes from AN-2020-05-11:
- Makefile system: A new version of the BSD make (bmake) program fixed
a bug in pattern macro substitution, so we are now able to detect
BSD make and to read BSD make program specific rules.

This could in theory allow us to support BSD make in the future,
but...

Note that we on the other side discovered a new bug with pattern
macro substitution in bsd make: The substitution:

$(FOO:%=bar/%)

is replaced by "bar/" with an empty "FOO", but of course, with an
empty FOO, the substitution should be empty as well.

This second bug (above) was fixed on May 6th, but we do not yet have
all needed make rules and we do not know whether other bugs may still
prevent the usability of BSD make. Supporting BSD make will be hard
as BSD make does not support pattern matching default rules and this
is important for placing the .o files into a sub-directory.

Also note that the portable program source for "bmake" from "pkgsrc"
is 2 years old and thus currently cannot be supported at all. If
you like to experiment on your own, you need to get this version:

http://crufty.net/help/sjg/bmake.html

see

http://www.crufty.net/ftp/pub/sjg/bmake.tar.gz

and replace the newer files from the netbsd.org CVS tree by hand in
order to fix the first and second mentioned pattern macro substitution
bug.

- Makefile system: RULES/MKLINKS was enhanced to create a new symlink
RULES/r-bsdmake.tag that points to RULES/r-make.tag

- Makefile system: The archive makefiles.tar.bz2 has been added to the
schilytools tree to allow easy reuse of the makefile system for own
projects.

(micha)