re PR target/63810 (gcc sets incorrect macro for OS X deployment targets)

re PR target/63810 (gcc sets incorrect macro for OS X deployment targets)

2015-05-28  Lawrence Velázquez  <vq@larryv.me>

	PR target/63810
	* config/darwin-c.c (version_components): New global enum.
	(parse_version, version_as_legacy_macro)
	(version_as_modern_macro, macosx_version_as_macro): New functions.
	(version_as_macro): Remove.
	(darwin_cpp_builtins): Use new function.

testsuite:
	PR target/63810
	* gcc.dg/darwin-minversion-3.c: Update testcase.
	* gcc.dg/darwin-minversion-4.c: Ditto.
	* gcc.dg/darwin-minversion-5.c: New testcase.
	* gcc.dg/darwin-minversion-6.c: Ditto.
	* gcc.dg/darwin-minversion-7.c: Ditto.
	* gcc.dg/darwin-minversion-8.c: Ditto.
	* gcc.dg/darwin-minversion-9.c: Ditto.
	* gcc.dg/darwin-minversion-10.c: Ditto.
	* gcc.dg/darwin-minversion-11.c: Ditto.
	* gcc.dg/darwin-minversion-12.c: Ditto.

From-SVN: r223808