2011-05-28  Jonathan Wakely  <jwakely.gcc@gmail.com>

	* acinclude.m4: Define GLIBCXX_CHECK_GET_NPROCS and
	GLIBCXX_CHECK_SC_NPROCESSORS_ONLN.
	* configure.ac: Use them. Increase minor version.
	* configure: Regenerate.
	* config.h.in: Regenerate.
	* include/std/thread (thread::hardware_concurrency): Remove inline
	definition.
	* src/thread.cc (thread::hardware_concurrency): Define.
	* config/abi/pre/gnu.ver: Export new symbol @3.4.17
	* testsuite/util/testsuite_abi.cc: Add new version.
	* testsuite/lib/libstdc++.exp (check_v3_target_nprocs): Add.
	* testsuite/lib/dg-options.exp (dg-require-nprocs): Add.
	* testsuite/30_threads/thread/members/hardware_concurrency.cc: Use
	dg-require-nprocs and verify hardware_concurrency returns non-zero.

From-SVN: r174383