PR c++/52282
	* decl.c (build_ptrmemfunc_type): Don't build a different
	RECORD_TYPE for a qualified PMF.
	* cp-tree.h (TYPE_PTRMEMFUNC_FN_TYPE): Merge cv-quals.
	(TYPE_PTRMEMFUNC_FN_TYPE_RAW): New.
	* decl2.c (cplus_decl_attributes): Use TYPE_PTRMEMFUNC_FN_TYPE_RAW.
	* tree.c (cp_walk_subtrees): Likewise.
	(cp_build_qualified_type_real): Remove special PMF handling.

From-SVN: r217660