c-decl.c (start_function): Don't warn if old prototype is builtin that's not in C...

c-decl.c (start_function): Don't warn if old prototype is builtin that's not in C's namespace.

	* c-decl.c (start_function): Don't warn if old prototype is builtin
	that's not in C's namespace.
	* libgcc2.c (_varargs): Update definition of __builtin_saveregs.
	(_bb): Add prototype for ctime.
	* config/alpha/osf.h (TRANSFER_FROM_TRAMPOLINE): Add missing protos.

From-SVN: r38980