call.c (standard_conversion): Tweak handling of pointer-to-member types.

call.c (standard_conversion): Tweak handling of pointer-to-member types.

	* call.c (standard_conversion): Tweak handling of
	pointer-to-member types.
	* pt.c (tsubst): Correctly qualify pointers-to-data member types.
	* typeck.c (comp_ptr_ttypes_real): Check qualifiers on
	pointer-to-data member types.

	* g++.dg/template/ptrmem6.C: New test.

From-SVN: r69855