thanks to milki for all the efforts!
Details:
- partial-copy fell afoul of BSD not having $RANDOM
- test suite: fix bad GNU sort with good perl sort
- test suite: fix md5sum dependency (which BSD doesn't have or can't
easily have or requires extra options or whatever...), by doing it
in perl. (Requires Digest::MD5, which is probably available
anyway, but since this is only for the test suite, meh!)
...there was one real bug, plus I had forgotten to put a comented out
line in the rc file, but most of the rest of the effort was moving the
test script over.
oh and I'd also forgotten to move this from 'commands' to 'triggers' :-)
