Hugs' build system

[Sven Panne]

Further investigation show that the problematic commit is probably:

  date: 2006-08-10 19:31:47 +0200;  author: ross;  state: Exp;
  split off generation of the compatibility libraries into tools/make_oldlib

If I see this correctly, tools/make_oldlib was introduced then, and removed a 
few months later:

  date: 2006-11-24 14:12:16 +0100;  author: ross;  state: dead;  lines: +0 -0;
  remove unused script

I am not sure why this should be a problem, but playing around with tailor's 
start-revision strongly suggests this.

A bit clueless,
   S.