* class.c (add_method): Fix documentation to reflect previous
	changes.  Check for duplicate method declarations here.
	* decl.c (decls_match): Handle FUNCTION_DECL vs TEMPLATE_DECL
	correctly; such things never match.
	(grokfndecl): Don't look for duplicate methods here.
	* decl2.c (check_classfn): Don't assume names are mangled.
	Don't add bogus member function declarations to a class before the
	class type is complete.
	(grokfield): Reformat error message.
	* method.c (set_mangled_name_for_decl): Don't mangle names while
	procesing_template_decl.

From-SVN: r23132