cp:
	* cp-tree.h (enum cp_lvalue_kind): Add clk_packed.
	* tree.c (lvalue_p_1): Set it.
	* class.c (check_field): Don't allow non-packed non-POD fields to
	be packed.
	* call.c (reference_binding): Need a temporary for all bitfield
	and packed fields.
	(convert_like_real): Check it is ok to make a temporary here.
testsuite:
	* g++.dg/ext/packed3.C: New test.
	* g++.dg/ext/packed4.C: New test.

From-SVN: r69669