[Automake-NG] [FYI] Merge branch 'master' into ng/master

[Stefano Lattarini]

commit 108aec93076a47ad4db91071915cc6dd234e366f
Merge: 405781d e92bd2e
Author: Stefano Lattarini <address@hidden>
Date:   Sat Jun 2 11:40:29 2012 +0200

    Merge branch 'master' into ng/master

    * master: (21 commits)
      news: document deprecation of configure.in
      news: put planned backward compatibilities early
      sync: update files from upstream with "make fetch"
      maint: deprecate 'configure.in' as autoconf input
      maint: post-release minor version bump
      release: stable release 1.12.1
      copyright: update copyright years in a couple of files
      tests: avoid spurious failures with Solaris 9 cscope program
      maintcheck: fix a spurious failure
      perf: beginning of a performance testsuite
      aclocal: declare function prototypes, do not use '&' in function calls
      news: support for configure.in will be dropped in future automake versions
      missing: support AC_CONFIG_HEADERS in addition to obsolete 
AC_CONFIG_HEADER
      missing: don't bother checking for AM_CONFIG_HEADER: it is gone now
      docs: remove mention of AM_CONFIG_HEADER: it is obsolete and removed now
      tests: fix botched heading comments in 'lex-clean-cxx.sh'
      [ng] maintcheck: some tweaks and fixlets
      help: fix a typo in the list of warning categories
      maint: version bump after beta release
      release: beta release 1.12.0b (will become 1.12.1)
      ...

    + Extra non-trivial edits:

    * Makefile.am (TESTS): Add the tests in the 't/perf' directory.

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