avr.h (RET_REGISTER, [...]): Remove.

avr.h (RET_REGISTER, [...]): Remove.

	* config/avr/avr.h (RET_REGISTER, LIBCALL_VALUE,
	FUNCTION_VALUE_REGNO_P): Remove.
	* config/avr/avr-protos.h (avr_ret_register, avr_libcall_value):
	Remove.
	* config/avr/avr.c (avr_ret_register): Make static inline.
	(avr_function_value_regno_p): New function.
	(avr_libcall_value): Make static. Add 'func' argument.
	(avr_function_value): Make static. Rename 'func' argument to
	'fn_decl_or_type', forward it to avr_libcall_value. Call
	avr_ret_register function instead of RET_REGISTER macro.
 	(TARGET_LIBCALL_VALUE, TARGET_FUNCTION_VALUE_REGNO_P): Define.

From-SVN: r171149