Merge from GCC:

	2009-03-16  Joseph Myers  <joseph@codesourcery.com>

	* configure.ac (--with-host-libstdcxx): New option.
	* configure: Regenerate.

	2009-01-29  Robert Millan  <rmh@aybabtu.com>

	* configure.ac: Recognize GNU/kOpenSolaris (*-*-kopensolaris*-gnu).
	* configure: Regenerate.

	2009-01-12  Sebastian Pop <sebastian.pop@amd.com>

	PR tree-optimization/38515
	* configure.ac (cloog-polylib): Removed.
	(with_ppl, with_cloog): Test for "no".
	* configure: Regenerated.