Revert "Update Gnulib to v0.1-603-g1d16a7b"

This reverts commit 2d4da30fde.

This Gnulib update was causing failures related to timezones in
stime.c.  I tried to fix it by adopting the time_rz module from gnulib
but that then caused other failures.  We can try again later.

lib/binary-io.c

@@ -1,4 +1,3 @@
 #include <config.h>
 #define BINARY_IO_INLINE _GL_EXTERN_INLINE
 #include "binary-io.h"
-typedef int dummy;