Patch to remove more EGCS references

[Jeffrey A Law]

  In message <Pine.BSF.4.30.0011031945100.38006-100000@taygeta.dbai.tuwien.ac.a
t>you write:
  > On Sat, 21 Oct 2000, Joseph S. Myers wrote:
  > > A few more references could go by removing the obsolete files makefile.vm
  > s
  > > (unmaintained - AFAICT VMS support is thoroughly bitrotten - and won't
  > > work with current GCC) and README.gnat (has no relevance to using GNAT
  > > with the current sources, which needs a new GNAT release to work at
  > > all).  OK to remove those files?
  > 
  > README.gnat really appears completely obsolete.
  > 
  > I suggest to wait, say, another week, and unless someone objects,
  > go ahead and remove it.
README.gnat was meant to be a starting point for folks wanting to do GNAT work;
I recommend we keep it until we have a publicly available GNAT front-end
that works with our development sources.

jeff