* cp-tree.h (cplus_expand_constant): Declare.
	* cvt.c (convert_to_pointer): Expand PTRMEM_CSTs when they're
	converted from one pointer-to-object type to another.
	* expr.c (cplus_expand_constant): Don't make it static.
	* typeck.c (build_component_ref): Don't crash when presented with
	a component which is a TEMPLATE_DECL.
	(build_ptrmemfunc): Tidy.  Clarify comment.  Make sure that even a
	cast from a pointer-to-member constant to its own type does not
	result in a valid non-type template argument.

From-SVN: r27092