DR 49, 100

	DR 49, 100
	* cp-tree.h (TYPE_REF_OBJ_P): New macro.
	(TYPE_PTR_P, TYPE_PTROB_P, TYPE_PTROBV_P, TYPE_PTRFN_P,
	TYPE_REFFN_P): Document.
	(fold_decl_constant_value): New prototype.
	* pt.c (convert_nontype_argument_function): Rewrite and extract
	parts into...
	(fold_decl_constant_value, convert_nontype_argument_function): New.
	(lookup_template_class): Add comment about useless double call.
	* mangle.c (write_expression): Strip conversions before lowering
	pointer to members.
	* cvt.c (ocp_convert): Check LOOKUP_COMPLAIN for a pedwarn. Disallow
	enum to enum conversion.

	* g++.dg/template/nontype7.C: New test.
	* g++.dg/template/nontype8.C: Likewise.
	* g++.dg/template/nontype9.C: Likewise.
	* g++.dg/template/nontype10.C: Likewise.
	* g++.dg/tc1/dr49.C: Likewise.
	* g++.dg/template/ptrmem8.C: Relax dg-error checks.
	* g++.old-deja/g++.other/null1.C: Remove a buggy error check

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@90059 138bc75d-0d04-0410-961f-82ee72b054a4