* decl.c (build_ptrmemfunc_type): Don't give a PMF RECORD_TYPE
	TYPE_BINFO or TYPE_LANG_SPECIFIC.
	* cp-tree.h (TYPE_PTRMEMFUNC_FLAG): Use TYPE_LANG_FLAG_2.
	(TYPE_PTRMEMFUNC_P): Don't expect TYPE_LANG_SPECIFIC.
	* typeck.c (build_ptrmemfunc_access_expr): Don't use lookup_member.
	* pt.c (unify): Also check whether the argument is a PMF.

From-SVN: r212164