TreeMap.navigableKeySet().descendingIterator() sequence ?

[Doug Lea]

Martin Buchholz wrote:
> Below is the proposed patch.
> 

I also checked in the JSR166 TCK improvements I mentioned.
(These aren't yet part of openjdk.) And also applied
to ConcurrentSkipListMapTest. See
http://gee.cs.oswego.edu/cgi-bin/viewcvs.cgi/jsr166/src/test/tck/TreeMapTest.java?view=log
http://gee.cs.oswego.edu/cgi-bin/viewcvs.cgi/jsr166/src/test/tck/ConcurrentSkipListMapTest.java?view=log

-Doug