[FYI] Merge branch 'maint' into master

[Stefano Lattarini]

commit 6a6bc51eebe4c702b1ae26acca79c3b865fd8981
Merge: 28ed42d 52ce42b
Author:     Stefano Lattarini <address@hidden>
AuthorDate: Wed Mar 14 22:29:59 2012 +0100

    Merge branch 'maint'

   * maint:
      tests: avoid spurious failures in get-sysconf.test
      scripts: bump the depcomp scriptversion
      sync: some auxiliary files synced from upstream
      coverage: an empty foo_PRIMARY should create directory $(foodir)
      coverage: make sure am__py_compile is defined when needed
      coverage: expose automake bug#10997
      coverage: expose automake bug#10975
      getopt: relax version requirement for perl

    + Extra non-trivial edits:

    * tests/dist-pr109765.test: Use 'configure.ac', not 'configure.in'.
    * tests/instdir-cond.test: Likewise.
    * tests/instdir-empty.test: Likewise.