re PR other/39888 (TLS emutls not linked to automatically on Darwin)

2009-11-18  Iain Sandoe <iain.sandoe@sandoe-acoustics.co.uk>

	PR other/39888
	* config/t-slibgcc-darwin: Fix embedded rpaths for
	--enable-version-specific-runtime-libs, build extension stub
	libs exposing features available from current libgcc_s.

From-SVN: r154282