[PATCH 0/7] Sync top-level files for libtool.m4 updates

I've extracted commits made to the binutils/gdb tree to bring libtool.m4
up-to-date (as well as some supplemental files for newer autotools).
This will allow updating to newer autoconf & automake and fix some new
warnings as a result.

I haven't included the regenerated autotool files here since I'm juggling
a bunch of changes and they're all leading to conflicts.  I'll make sure
to include those before actually pushing anything.  I have tested that I
can actually regenerate & rebuild things already.

Alexander von Gluck IV (1):
  Add support for the haiku operating system. These are the os support
    patches we have been grooming and maintaining for quite a few years
    over on git.haiku-os.org. All of these architectures are working and
    most have been stable for quite some time.

H.J. Lu (2):
  GCC: Pass --plugin to AR and RANLIB
  GCC: Check if AR works with --plugin and rc

Nick Alcock (2):
  libtool.m4: augment symcode for Solaris 11
  libtool.m4: fix nm BSD flag detection

Samuel Thibault (1):
  libtool.m4: update GNU/Hurd test from upstream. In upstream libtool,
    47a889a4ca20 ("Improve GNU/Hurd support.") fixed detection of
    shlibpath_overrides_runpath, thus avoiding unnecessary relink. This
    backports it.

Simon Marchi (1):
  Bump to autoconf 2.69 and automake 1.15.1

 .gitignore             |    1 -
 Makefile.in            |    5 +-
 Makefile.tpl           |    5 +-
 README-maintainer-mode |    4 +-
 ar-lib                 |  270 +++++++++
 config/gcc-plugin.m4   |   40 ++
 config/override.m4     |    2 +-
 configure              | 1238 +++++++++++++++++++++-------------------
 configure.ac           |   22 +-
 libtool.m4             |  140 +++--
 test-driver            |  148 +++++
 11 files changed, 1226 insertions(+), 649 deletions(-)
 create mode 100755 ar-lib
 create mode 100755 test-driver

-- 
2.33.0