re PR c++/54744 (internal compiler error: Segmentation fault, by dependent base, member typedef and ctor-initializer)

	PR c++/54744
	* pt.c (resolve_typename_type): Check TYPENAME_IS_RESOLVING_P on scope.
	* init.c (expand_member_init): Check for being in a template first.
	* parser.c (cp_parser_mem_initializer_list): Only check class types
	for equivalence to the current class.

From-SVN: r194267