* decl.c (lookup_name_real): Set the complain flag if we're
	looking for a namespace member.

	* lex.c (real_yylex): We can have a number with no digits.

	* cvt.c (cp_convert_to_pointer): Don't force pmf conversions.

	* search.c (binfo_from_vbase): New fn.
	* cp-tree.h: Declare it.
	* cvt.c (cp_convert_to_pointer): Use it to diagnose conversion
	from pointer to member of virtual base.
	* typeck.c (get_delta_difference): Likewise.

From-SVN: r28560