* tree.h (CALL_EXPR_ARGS): Delete.
	(call_expr_arglist): Delete.
	* tree.c (call_expr_arglist): Delete.
	* builtins.c (fold_call_expr): Pass the whole CALL_EXPR to
	targetm.fold_builtin.
	* config/alpha/alpha.c (alpha_fold_builtin): Rename arglist parameter.
	Rewrite iteration to work on call_expr_nargs rather than TREE_CHAIN.
	* config/picochip/picochip.c (picochip_expand_builtin_2op): Rename
	arglist parameter.  Use CALL_EXPR_ARG.
	(picochip_expand_builtin_3op): Likewise.
	(picochip_expand_builtin_2opvoid): Likewise.
	(picochip_expand_array_get): Likewise.
	(picochip_expand_array_put): Likewise.
	(picochip_expand_array_testport): Likewise.
	(picochip_expand_builtin): Don't call CALL_EXPR_ARGS.  Pass exp
	rather than arglist.
	* config/rx/rx.c (rx_expand_builtin): Call call_expr_nargs instead of
	CALL_EXPR_ARGS.
	* config/sparc/sparc.c (sparc_fold_builtin): Use CALL_EXPR_ARG rather
	than TREE_VALUE and TREE_CHAIN.
	* config/xtensa/xtensa.c (xtensa_fold_builtin): Likewise.
	* doc/tm.texi (TARGET_FOLD_BUILTIN): Pass CALL_EXPR tree instead of
	the arglist.

From-SVN: r159502