* config/srclist.txt: Add glibc bug 321 for obstack.c, obstack.h.

* config/srclist.txt: Add glibc bug 321 for obstack.c, obstack.h.
* lib/obstack.c [defined _LIBC && defined USE_IN_LIBIO]: Don't
include <wchar.h>; no longer needed.
* lib/obstack.c (print_and_abort) [defined _LIBC]: Use __fxprintf
instead of inline stream orientation test and two separate
function calls.  Pay no attention to USE_IN_LIBIO.
* lib/obstack.h [!__STDC__] (obstack_int_grow_fast): Fix misnamed
macro argument.
Reported by Matej Vela <vela@debian.org>.