parallelpython support for 3.x; bumped to pp-1.6.4.2; random default port in pp;
dill save dict of user defined module


git-svn-id: svn+ssh://svn.mystic.cacr.caltech.edu/pathos/pathos@662 8bfda07e-5b16-0410-ab1d-fd04ec2748df
Merge branch 'master' of https://github.com/uqfoundation/pathos