re PR libstdc++/35887 (stl parallel includes installed for --disable-libgomp)

re PR libstdc++/35887 (stl parallel includes installed for --disable-libgomp)

2008-04-24  Benjamin Kosnik  <bkoz@redhat.com>

	PR libstdc++/35887
	* configure.ac: Add default argument to GLIBCXX_ENABLE_PARALLEL.
	Move atomic warnings to GLIBCXX_ENABLE_ATOMIC_BUILTINS.
	* acinclude.m4 (GLIBCXX_ENABLE_PARALLEL): Check for --disable-libgomp.
	(GLIBCXX_ENABLE_ATOMIC_BUILTINS): Add warning information.
	* configure: Regenerate.
	* include/Makefile.am (parallel_headers): Make conditional on
	ENABLE_PARALLEL.
	* include/Makefile.in: Regenerate.

From-SVN: r134649