Fix gcc.dg/builtin-apply2.c failures:

	Fix gcc.dg/builtin-apply2.c failures:
	* sh.h (TARGET_VARARGS_PRETEND_ARGS): Define.
	* sh.c (extra_push): Delete.
	(sh_expand_prologue): Don't do extra stack adjustment for
	current_function_pretend_args_size if it comes from varargs setup.
	Use TARGET_VARARGS_PRETEND_ARGS.  Don't set extra_push.
	(sh_expand_epilogue): Don't use extra_push.
	(sh_setup_incoming_varargs): Set pretend_arg_size when necessary.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@83863 138bc75d-0d04-0410-961f-82ee72b054a4