fix for glibc strftime.c bug that causes display-time to hang emacs

[Jan D.]

>    Date: Thu, 24 Sep 1998 11:51:44 -0600
>    From: Richard Stallman <rms@santafe.edu>
> 
>    It looks like this bug calls for a fix in Emacs
>    and a fix in strftime.
> 
> I think that only strftime needs a fix, as described below.
> Jan.Djarv, can you please try this fix?  I don't have easy access to
> your type of machine.
> 

The fix works OK.  Thanks.

	Jan D.