gcc/testsuite:

	* objc.dg/foreach-1.m: Skip for Darwin < 9.
	* objc.dg/objc-foreach-4.m: Likewise.
	* objc.dg/objc-foreach-5.m: Skip for Darwin < 9, adjust headers.
	* objc.dg/foreach-2.m: Skip for Darwin < 9, return self from init.
	* objc.dg/foreach-4.m: Likewise.
	* objc.dg/foreach-5.m: Likewise.
	* objc.dg/foreach-3.m: Return self from init.

From-SVN: r168616