4.4BSD snapshot (revision 8.1); add 1993 to copyright

new copyright; att/bsd/shared

port to tahoe by Nir peleg of CCI

Add copyright

added function "isendofproc" to test for END op

changed the default for the FOR operator -- now for loops are
traced through every iteration, this is painful but makes more sense to
the users

the "con" operator was being incorrectly processed

date and time created 82/01/18 19:20:21 by linton