Add TLS checks to ObjC

Add TLS checks to ObjC

	* objc-obj-c++-shared/Object1.m: New.
	* objc.dg/torture: New directory.
	* objc.dg/torture/tls: Ditto.
	* objc.dg/tls: Ditto.
	* objc.dg/torture/tls/trivial.m: New test.
	* objc.dg/torture/tls/thr-init-2.m: New test.
	* objc.dg/torture/tls/thr-init-3.m: New test.
	* objc.dg/torture/tls/thr-init.m: New test.
	* objc.dg/torture/tls/diag-1.m: New test.
	* objc.dg/torture/tls/tls.exp: New.
	* objc.dg/torture/trivial.m: New test.
	* objc.dg/torture/dg-torture.exp: New.
	* objc.dg/tls/diag-3.m: New test.
	* objc.dg/tls/diag-4.m: New test.
	* objc.dg/tls/diag-5.m: New test.
	* objc.dg/tls/init-1.m: New test.
	* objc.dg/tls/init-2.m: New test.
	* objc.dg/tls/tls.exp: New.
	* objc.dg/tls/diag-2.m: New test.
	* lib/objc.exp: Respond to dg-additional-files.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@159311 138bc75d-0d04-0410-961f-82ee72b054a4