[krbdev.mit.edu #1242] mainline util/reconf does not work on debian

[Ken Raeburn via RT]

Sam, using the autoconf 2.57 you installed on sfdf, I have no problems
with the configure.in files as they are.

There is a minor problem with aclocal.m4 and the configure scripts it
had generated for me on my system before I ran them on sfdf:

We decide whether --include or --localdir is supported by looking for a
macro defined in 2.54 or whatever the point was where --localdir stopped
being accepted.  That test happens when m4 is run, the result gets put
into the configure script, then into the generated makefiles, and is
eventually used when running autoconf (if that's ever needed).  The
problem is, the autoconf run at that point may not be the one originally
used to generate the current configure scripts.  The configure scripts I
produced with autoconf 2.53 generated makefiles that specified the use
of --localdir, but 2.57 on sfdf didn't accept that option.

Running util/reconf on sfdf fixed the problem, so it's not a big deal.

If we want to fix it, I think requiring 2.53 and always using --include
will take care of it.  (The --include option wasn't introduced until
2.53, I believe.)  Well, long term, I think we definitely want to fix
it; question is, is it important for 1.3?  It's a small problem, but
should be a small change to fix it.