bug#17622: 24.4.50; bootstrap failure

[Eli Zaretskii]

> From: Fabrice Popineau <fabrice.popineau@gmail.com>
> Date: Thu, 29 May 2014 14:55:38 +0200
> Cc: Katsumi Yamaoka <yamaoka@jpl.org>, 17622@debbugs.gnu.org, Eli Zaretskii 
> <eliz@gnu.org>
> 
> but I wonder if it couldn't be handled at the beginning of
> bufffer.c:init_buffer() instead.

That's what I did, except that we should only do that in emacs, not in
temacs, so init_buffer now accepts a flag variable to achieve that.