call.c (reference_binding): Remove REF_IS_VAR parameter.

call.c (reference_binding): Remove REF_IS_VAR parameter.

	* call.c (reference_binding): Remove REF_IS_VAR parameter.
	(implicit_conversion): Adjust call to reference_binding.
	(make_temporary_var_for_ref_to_type): Add TYPE parameter.
	(initialize_reference): Adjust handling for references bound to
	rvalues.
	* cp-tree.h (make_temporary_var_for_ref_to_temp): Change
	prototype.
	(real_non_cast_lvalue_p): New function.
	* cvt.c (build_up_reference): Adjust use of
	make_temporary_var_for_ref_to_temp.
	* tree.c (real_non_cast_lvalue_p): New function.

	* g++.dg/init/ref4.C: New test.

From-SVN: r63949