STR:COMPRESS-SPACE

[JONL at MIT-MC (Jon L White)]

Ok, I think I see why the last few chars of each string is
being garbaged by STR:COMPRESS-SPACE.  I don't have time to
repair it be fore getting on the plane to CA, but I've talked
out the problem with RLB and he may tackle it while I'm gone.
Basically, Soley, some time ago, you and I decided it would be
good for string-equal just to be able to do word comparisons,
so that made the requirement that the bits in the last stored
word of a string must be guaranteed to be zero -- certifying
this guarantee after a string-relocation is what has been
causing the bug.