bug#16125: 24.3.50; build failure

[Katsumi Yamaoka]

Solved by r115499.  Thanks.

Katsumi Yamaoka wrote:
> The recent change in regex.c (r115491) causes an error when
> bootstrapping bootstrap-emacs on Cygwin (at least?).
> Reverting it works around.

> if test "no" = "yes"; then \
>   rm -f bootstrap-emacs.exe; \
>   ln temacs.exe bootstrap-emacs.exe; \
> else \
>   ./temacs --batch --load loadup bootstrap || exit 1; \
>   test "X" = X ||  -zex emacs.exe; \
>   mv -f emacs.exe bootstrap-emacs.exe; \
> fi
> Loading loadup.el (source)...
> Using load-path (/Work/emacs/lisp /Work/emacs/lisp/emacs-lisp 
> /Work/emacs/lisp/language /Work/emacs/lisp/international 
> /Work/emacs/lisp/textmodes /Work/emacs/lisp/vc)
> Loading emacs-lisp/byte-run...
> Loading emacs-lisp/backquote...
> Loading subr...
> Loading version...
> [...]
> Loading /Work/emacs/lisp/startup.el (source)...
> Loading /Work/emacs/lisp/ldefs-boot.el (source)...
> Invalid regexp: "Invalid content of \\{\\}"
> Makefile:811: recipe for target 'bootstrap-emacs.exe' failed

> In GNU Emacs 24.3.50.1 (i686-pc-cygwin, GTK+ Version 3.8.2)
>  of 2013-12-13 on localhost
> Bzr revision: 115496 rgm@gnu.org-20131212224131-2bqe6eaps7ml2pq1
> Windowing system distributor `The Cygwin/X Project', version 11.0.11404000
> Configured using:
>  `configure --verbose --with-x-toolkit=gtk3'