* c-common.c (c_common_nodes_and_builtins): Make sizetype_endlink

	* c-common.c (c_common_nodes_and_builtins): Make sizetype_endlink
	reference the language-equivalent of sizetype.
	* c-typeck.c (comptypes): Treat sizetype like its language equivalent.
	* fold-const.c (size_binop, size_diffop): Put back checks.
	* gcse.c (dump_hash_table): Fix minor error in last change.
	* stor-layout.c (set_sizetype): Set TYPE_DOMAIN of sizetype.
	Clear TYPE_{NEXT,MAIN}_VARIANT and TYPE_{POINTER,REFERENCE}_to of
	all sizetypes.
	* cp/typeck.c (comptypes): Treat sizetype like its language equivalent.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@32291 138bc75d-0d04-0410-961f-82ee72b054a4