changed # of ticks in crime3socnet5switch.lisp from 8K to 5K
Merge branch 'master' of github.com:spacekh/popco
added "deprecated" comment to randomize function.  added test files for randomize vs shuffle functions.
Added shuffle and copy-shuffle as replacements for randomize, and replaced call to randomize in social-net.lisp.
I replaced the call to randomize in choose-conversers with the new copy-shuffle.
shuffle is the Knuth/Fisher-Yates algorithm.  It's twice as fast as Thagard's
randomize on a list of 10K integers, but this seems to make no difference
that matters on the short lists used in choose-conversers.  Still, the Knuth
algorithm is considered the standard, and it's easier to understand than the
one that Thagard used.