[FYI] Merge branch 'maint' into master

[Stefano Lattarini]

commit 7eccbf44fcee432c20ccd95b384f1c3494e4712c
Merge: bdb984b 19d4b87
Author: Stefano Lattarini <address@hidden>
Date:   Fri Jul 13 14:58:17 2012 +0200

    Merge branch 'maint'

    * maint:
      news: mention fixed testsuite weaknesses
      news: bump, for future 1.12.3
      tests: verify the shell test scripts are syntactically valid
      tests: don't use C instead of C++ compiler on case-insensitive platforms
      tests: avoid spurious TAP errors on Mac OS X 10.7
      tests: fix spurious failure in aclocal7.sh on fast machines

    Signed-off-by: Stefano Lattarini <address@hidden>