PR/10271
	* pa-protos.h (function_arg): Remove last argument.
	* pa.c (function_arg): Likewise.  Use CUMULATIVE_ARGS struct instead.
	* pa.h (struct hppa_args): Add member incoming.
	(INIT_CUMULATIVE_ARGS, INIT_CUMULATIVE_INCOMING_ARGS): Initialize
	member incoming.
	(FUNCTION_ARG): Revise call to function_arg.
	(FUNCTION_INCOMING_ARG): Delete.

From-SVN: r65687