(Spec Review) 8002356: Add ForkJoin common pool and CountedCompleted

[Chris Hegarty]

I would like to start review discussion of the spec changes to 
ForkJoinXXX ( add a default common pool, task tags, and other minor 
updates ), and the addition of CountedCompleter, as part of part of JEP 
155 [1].

These changes are of course coming form Doug and the JSR 166 EG members. 
I have done a quick sanity review, and the changes reflect what is in 
Doug's CVS. I need to spend more time reviewing myself, others on the 
list have more experience with these new API already and may have 
valuable feedback.

Depending on how the discussion goes, this thread may have to 
move/include the concurrency-interest list, but I think we at least need 
to get things started here.

http://cr.openjdk.java.net/~chegar/8002356/specdiff/java/util/concurrent/package-summary.html

-Chris.

[1] http://openjdk.java.net/jeps/155