new version of PCL

[Gregor.pa@Xerox.COM]

There is a new version of PCL on parcvax.xerox.com.

This is a BETA TEST VERSION only.  This version includes standard method
combination.  This will make it possible to use :before and :after
methods with this version.  This version also has a faster
implementation of call-next-method, but there are some known problems
with it.

This BETA TEST VERSION runs in Symbolics, Lucid, Franz and Coral Common
Lisps only.  Subsequent releases will run in all the rest of the Common
Lisps.

The primary purpose of this release is to get some initial feedback from
people who want to use standard method combination.

See the notes.text file for more information.

Gregor
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