[COMMIT] Use with-FOO consistently instead of enable-FOO

[Stephen J. Turnbull]

Ben Wing writes:

 > Sorry, I missed this one.  I'll do this in the future.  The only such
 > change coming down the pike is a fix to allow both GTK and X to be
 > configured simultaneously.  I had to do some serious hacking to get
 > this to work.

Yes, please give advance warning on that.  It is not unreasonable to
put a fuse on it, such as 48 hours (chosen because that's what Mike
and I usually use), and if you get no response within that time commit
at your convenience.