* c-common.c (cb_register_builtins): Handle more built-ins
	here rather than in gcc.c specs.
	* gcc.c (cpp_unique_options): Move many built-ins to c-common.c.
	(cpp_options): Pass -O flags even when only preprocessing.
	* toplev.c (set_fast_math_flags): New prototype.
	(fast_math_flags_set_p): New.
	(set_no_fast_math_flags): Remove.
	(decode_f_option): Update.
	* toplev.h (set_fast_math_flags): Update.
	(fast_math_flags_set_p): New.
	(set_no_fast_math_flags): Remove.
config:
	* c4x/c4x.c (c4x_override_options): Update.

From-SVN: r53526