libgomp.exp (libgomp_init): Add -shared-libgcc for *-*-darwin*.

2007-03-23  Andreas Tobler  <a.tobler@schweiz.org>

	* testsuite/lib/libgomp.exp (libgomp_init): Add -shared-libgcc for
	*-*-darwin*.
	* testsuite/libgomp.c++/c++.exp: Look for shared libstdc++ library
	and use it if found.

From-SVN: r123162