* cp-tree.h (treat_lvalue_as_rvalue_p): Declare.
	* except.c (build_throw): Use it.  Use CP_TYPE_VOLATILE_P.
	* typeck.c (treat_lvalue_as_rvalue_p): No longer static.  Add PARM_OK
	parameter.
	(maybe_warn_pessimizing_move): Adjust treat_lvalue_as_rvalue_p call.
	(check_return_expr): Likewise.

From-SVN: r264101