gcc-2.7 creates faster code than pgcc-1.1.1

[Jeffrey A Law]

  In message < 19990305145306.4796.qmail@deer >you write:
  > >It is easier to back it out if we decide it is not a good idea after
  > >all.
  > 
  > Just for my own sanity: we're not in any way seriously considering
  > this *performance* patch for 1.1.2, are we??!
Absolutely not.

Once we can get 1.1.2 finished I'll dig out my work to improve the zero
extension code and submit it.  It's far more complete than HJ's hack.

jeff