Bug#177940: mktime.c fix

[Paul Eggert <eggert@CS.UCLA.EDU>]

Jeff Bailey <jbailey@nisa.net> writes:

> It's been a while since I've looked at this, but it appears that the
> files should be identical, right?  (All the #ifdef _LIBC constructs are
> still in place).  If yes, I can put together a series of patches to get
> it back in sync.

Thanks for volunteering!  But I really should do it, since I wrote
mktime.c and understand the patches well.

I'll send the proposed patches to libc-alpha, since Ulrich won't let
me send email to libc-hacker.  If nothing happens for a while, I
suppose that you can copy the patches to libc-hacker.