Change 3003 on 2004/07/22 by thorsten@host27
  Fixes file "saving" bug thanks to Massimo Valentini

Change 3001 on 2004/07/21 by chormann@chho
  fix for antialiasing method 1 + gamma correction bug.  Render
  results will differ because antialiasing now works on unclipped
  values.  But this has been the case for aa method 2 before.

Change 2958 on 2004/07/07 by chrisc@hyperthread
  fix 'backend thread failed to init' bug.

Change 2926 on 2004/06/30 by chrisc@hyperthread
  adds bglass.inc to balcony scene (recovered from glass.inc#2).