Revision 662906

2008-06-03  Eric Lemings <eric.lemings@roguewave.com>

	STDCXX-488
	* etc/config/GNUmakefile.tst (LDFLAGS): Use appropriate form of
	RPATH options in LDFLAGS variable on Darwin platforms.
	* etc/config/gcc.config: Retrieve major OS version on Darwin
	platforms and use @rpath in -install_name flag if building
	on Darwin 9.x (Mac OS 10.5).  Use only library basename for all
	other versions of Darwin.  Also define RPATH variable on Darwin.