[FYI] Merge branch 'maint' into master

[Stefano Lattarini]

commit 094b83a641e3b5b4aedf8820cb2af9d1c32cb476
Merge: 7eccbf4 455437e
Author: Stefano Lattarini <address@hidden>
Date:   Mon Jul 16 11:16:15 2012 +0200

    Merge branch 'maint'

    * maint:
      fixup: delete "# serial" line in m4/amversion.in
      news: update about recent ylwrap changes and fixes
      m4: get rid of "# serial" lines
      configure: ${#param} must be supported by the shell for the testsuite
      yacc tests: fix a spurious failure with parallel make
      ylwrap: use proper quoting inside a `...` substitution
      ylwrap: don't uselessly reset the exit status in case of failure
      ylwrap: fix C++ support for Bison
      ylwrap: refactor: move loop invariant
      ylwrap: refactoring: don't rely on the file order
      tests: upgrade and fix Bison test case
      tests: fix bison input file
      ylwrap: comment changes
      ylwrap: modernize idioms
      ylwrap: rename header inclusion in generated parsers
      ylwrap: simplify the list of renamings
      ylwrap: refactor: less duplication

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