mmix-protos.h (mmix_function_arg): Delete.

mmix-protos.h (mmix_function_arg): Delete.

	* config/mmix/mmix-protos.h (mmix_function_arg): Delete.
	* config/mmix/mmix.h (FUNCTION_ARG, FUNCTION_ARG_ADVANCE): Delete.
	* config/mmix/mmix.c (mmix_function_arg): Rename to...
	(mmix_function_arg_1): ...this.  Make static.  Take a const_tree and
	bool arguments.
	(mmix_function_arg): New function.
	(mmix_function_incoming_arg): New function.
	(mmix_function_arg_advance): New function.
	(TARGET_FUNCTION_ARG, TARGET_FUNCTION_INCOMING_ARG): Define.
	(TARGET_FUNCTION_ARG_ADVANCE): Define.

From-SVN: r165230