tree.c (signed_or_unsigned_type_for): Use build_nonstandard_integer_type.

tree.c (signed_or_unsigned_type_for): Use build_nonstandard_integer_type.

2012-03-12  Richard Guenther  <rguenther@suse.de>

	* tree.c (signed_or_unsigned_type_for): Use
	build_nonstandard_integer_type.
	(signed_type_for): Adjust documentation.
	(unsigned_type_for): Likewise.
	* tree-pretty-print.c (dump_generic_node): Use standard names
	for non-standard integer types if available.

From-SVN: r185226