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

[Stefano Lattarini]

commit 036f7d879d98851e82b174a68048abac5dbf28d8
Merge: 934f800 dd3fb7e
Author: Stefano Lattarini <address@hidden>
Date:   Wed Nov 7 21:39:04 2012 +0100

    Merge branch 'master' into ng/master

    * master:
      tests: rename few tests (on silent-rules support)
      tests: merge two tests on silent-rules with libtool
      vala tests: source test-init.sh, not ./defs
      tests: fix a spurious typo-related failure
      tests: remove spurious leftover use of 'Exit'
      tests: can check our recipes avoid trailing backslashes
      vala: improve comments to AM_PROG_VALAC
      news: update w.r.t. recent vala changes
      vala: if no proper compiler found, set $(VALAC) to 'valac'
      vala: AM_PROG_VALAC should not produce an error for tool-old valac
      docs: document recent changes to AM_PROG_VALAC
      tests: enhance tests on AM_PROG_VALAC
      vala: style fixes in vala.m4
      vala: add action arguments, for when no proper vala compiler is found

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