2014-04-28  Richard Biener  <rguenther@suse.de>

	* configure.ac: Do valgrind header checks unconditionally.
	Add --enable-valgrind-annotations.
	* system.h: Guard valgrind header inclusion with
	ENABLE_VALGRIND_ANNOTATIONS instead of ENABLE_VALGRIND_CHECKING.
	* alloc-pool.c (pool_alloc, pool_free): Use
	ENABLE_VALGRIND_ANNOTATIONS instead of ENABLE_VALGRIND_CHECKING
	to guard possibly dead code.
	* config.in: Regenerated.
	* configure: Likewise.

From-SVN: r209861