[1/2] RFC: remove doc/configure

[Joel Brobecker]

> b/gdb/ChangeLog:
> 2010-11-19  Tom Tromey  <tromey@redhat.com>
> 
> 	* Makefile.in (SUBDIRS): Add doc.
> 	* configure: Rebuild.
> 	* configure.ac: Don't configure in doc.  Create doc/Makefile.
> 
> b/gdb/doc/ChangeLog:
> 2010-11-19  Tom Tromey  <tromey@redhat.com>
> 
> 	* Makefile.in (Makefile): Run ../config.status.
> 	(distclean): Update.
> 	* configure: Remove.
> 	* configure.ac: Remove.

I like it :).

configure is often seen as a bottleneck in term of the amount of time
taken to perform builds, especially on Windows where fork/exec just takes
forever. But it's also becoming true on Unix machines where large number
of cores allow all the compilations to be parallelized, so the time to
configure becomes a bigger chunck of the wall-clock time.  That could
be a possible argument in favor of fragmenting the configury.  But in
this case, this is hardly applicable because:
  . The gdb/doc/configure script is really minimal
  . All the checks it makes have already been done by gdb/configure.

-- 
Joel