* builtins.c, c-aux-info.c, c-common.c, c-cppbuiltin.c, c-decl.c:
	Change most occurrences of TREE_UNSIGNED to TYPE_UNSIGNED.
	* c-format.c, c-opts.c, c-pretty-print.c, c-typeck.c: Likewise.
	* calls.c, convert.c, dbxout.c, dojump.c, dwarf2out.c: Likewise.
	* expmed.c, expr.c, fold-const.c, function.c, integrate.c: Likewise.
	* optabs.c, sdbout.c, stmt.c, stor-layout.c, tree-dump.c: Likewise.
	* tree.c, config/iq2000/iq2000.c, config/m32r/m32r.c: Likewise.
	* config/mips/mips.c, config/rs6000/rs6000.c: Likewise.
	* config/s390/s390.c, config/sparc/sparc.c, objc/objc-act.c: Likewise.
	* stor-layout.c (layout_type, case COMPLEX_TYPE): Test for
	REAL_TYPE, not INTEGER_TYPE.
	(layout_type, case VECTOR_TYPE): Simplify code.
	* tree.c (build_vector_type_for_mode): Remove dup unsigned setting.
	* tree.h: Update comments.
	(STRIP_NOPS): Use TYPE_UNSIGNED.
	(TYPE_UNSIGNED): New macro.
	(TYPE_TRAP_SIGNED): Remove now redundant check.
	(SAVE_EXPR_NOPLACEHOLDER): Don't use TREE_UNSIGNED.

	* cp/call.c (joust): Use TYPE_UNSIGNED, not TREE_UNSIGNED.
	* cp/class.c (check_bitfield_decl): Likewise.
	* cp/cvt.c (type_promotes_to): Likewise.
	* cp/decl.c (finish_enum): Likewise.
	* cp/mangle.c (write_builtin_type): Likewise.
	* cp/semantics.c (finish_switch_cond, finish_unary_op_expr): Likewise.
	* cp/typeck.c (type_after_usual_arithmetic_conversions): Likewise.
	(build_binary_op): Likewise.

	* f/com.c (ffecom_arrayref_): Use TYPE_UNSIGNED, not TREE_UNSIGNED.
	(ffecom_expr_): Likewise.

	* java/jcf-write.c (generate_bytecode_insns): Use TYPE_UNSIGNED.

	* treelang/treetree.c (tree_lang_signed_or_unsigned_type):
	Use TYPE_UNSIGNED, not TREE_UNSIGNED.

	* ada/decl.c (gnat_to_gnu_entity, make_type_from_size):
	Use TYPE_UNSIGNED, not TREE_UNSIGNED.
	* ada/trans.c (tree_transform, convert_with_check): Likewise.
	* ada/utils.c (gnat_signed_or_unsigned_type): Likewise.
	(build_vms_descriptor, unchecked_convert): Likewise.
	* ada/utils2.c (nonbinary_modular_operation): Likewise.

From-SVN: r80287