gcc/testsuite/
	* lib/target-supports.exp (check_cached_effective_target): New
	procedure.
	(check_no_compiler_messages, check_no_messages_and_pattern): Use it.
	(check_effective_target_c99_runtime): New procedure.
	* gcc.dg/builtins-20.c (test3f): Wrap cargf check in HAVE_C99_RUNTIME.
	(test3l): Likewise cargl.
	* gcc.dg/builtins-59.c: Require c99_runtime.
	* gcc.dg/builtins-61.c: Likewise.
	* gcc.dg/builtins-62.c: Likewise.

From-SVN: r128664