Makefile.am (AM_CXXFLAGS): Remove -Wno-variadic-macros.

	* tsan/Makefile.am (AM_CXXFLAGS): Remove -Wno-variadic-macros.
	* Makefile.am (SUBDIRS): Guard tsan addition with TSAN_SUPPORTED
	automake conditional instead of !MULTISUBDIR32.
	* configure.tgt: Set TSAN_SUPPORTED=yes for x86_64/i686-linux
	for 64-bit multilib.
	* configure.ac: Check for void * size, source in configure.tgt,
	define TSAN_SUPPORTED conditional instead of MULTILIBDIR32.
	* configure: Regenerated.
	* Makefile.in: Regenerated.
	* tsan/Makefile.in: Regenerated.

From-SVN: r193741