* gcc-interface/trans.c (Identifier_to_gnu): Use boolean variable.
	(call_to_gnu): Test gigi's flag TYPE_BY_REFERENCE_P instead of calling
	front-end's predicate Is_By_Reference_Type.  Use consistent order and
	remove ??? comment.  Use original conversion in all cases, if any.
	* gcc-interface/utils.c (make_dummy_type): Minor tweak.
	(convert): Use local copy in more cases.
	<INDIRECT_REF>: Remove deactivated code.
	(unchecked_convert): Use a couple of local copies.

From-SVN: r158216