"make dist" support

[Jeffrey A Law]

  In message <Pine.LNX.4.30.0011061908100.8053-100000@kern.srcf.societies.cam.a
c.uk>you write:
  > I suspect there may be more unused junk in the Makefiles (and elsewhere in
  > the distribution) though. 
Yup.  I'm particularly interested in cleaning up the Makefile crud.

  >  For starters, there's protoize still in the
  > distribution but no longer built by default - it was suggested a year ago
  > that it would better move to a separate package.
Yup.  It never belonged in the GCC distribution to start with :-)

jeff