Refactors and implements connection tracker.
Miscellaneous fixes.

- Changed threadpool to use a SynchronousQueue.
- SpaceUtil.wipe now used to flush space queues.
Merge pull request #48 from vsalaman/oneshot

Enhancements to OneShotChannelAdaptorMK2
added pmd reports
temporarily remove cp of pmd report file
copy pmd files to gh-pages
Fix DCL warning
Merge pull request #49 from vishnupillai/master

Fix DCL warning
pmd directory already exists, use -p
PMD: reviewed assorted empty catch blocks
PMD: combined if statement
jPOS CMF DE 022 (Entry mode) helper class

See http://jpos.org/doc/jPOS-CMF.pdf