bug#9132: 24.0.50; bootstrap failure on windows

[Eli Zaretskii]

> From: Sam Steingold <sds@gnu.org>
> Cc: 9132@debbugs.gnu.org
> Date: Thu, 21 Jul 2011 14:08:51 -0400
> 
> > * Eli Zaretskii <ryvm@tah.bet> [2011-07-21 20:25:04 +0300]:
> >
> > This comes from charset.c, FWIW, and the reason is a failed call to
> > `fopen'.  It would be good to know the errno value for that failure,
> > and also the value of Vcharset_map_path.
> 
> so why doesn't emacs print a useful error message?

You are welcome to add one, but please be aware that this message is
presented to users in an interactive session, so it should be
understandable by mere mortals.