"make dist" support

[Jeffrey A Law]

  In message <Pine.LNX.4.30.0011040003480.29545-100000@kern.srcf.societies.cam.
ac.uk>you write:
  > gcc/Makefile.in (and some other files) seems to include some machinery for
  > "make dist" (see targets distdir, diff etc.).  It looks like these are
  > obsolete targets creating an old-style gcc-2.8 style distribution; could
  > someone confirm whether these targets are no longer used in creating
  > distribution tarballs and diffs and can safely be removed?
That stuff is obsolete.  I would love a patch to remove all that stuff.

jeff