* call.c (convert_default_arg): Make global, not static.

	* call.c (convert_default_arg): Make global, not static.
	(convert_arg_for_ellipsis): Split out from ...
	(build_over_call): Here.
	* cp-tree.h (convert_default_arg); Declare.
	(convert_arg_to_ellipsis): Likewise.
	(do_member_init): Remove.
	* init.c (do_member_init): Remove; this code is dead.
	(expand_member_init): Remove much of this code; it is dead.
	* typeck.c (convert_arguments): Use convert_default_arg and
	convert_arg_for_ellipsis, rather than duplicating here.
	* call.c (convert_like): Don't fail silently if
	build_user_type_conversion fails.  Always return error_mark_node
	for failure.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@20424 138bc75d-0d04-0410-961f-82ee72b054a4