replaced `which python` with pytina.tools.which_python (re: ticket #142)


git-svn-id: svn+ssh://svn.mystic.cacr.caltech.edu/pathos/pyina@509 8bfda07e-5b16-0410-ab1d-fd04ec2748df
moved mystic.cache to new subpackage klepto; updated LICENSE files


git-svn-id: svn+ssh://svn.mystic.cacr.caltech.edu/pathos/pyina@510 8bfda07e-5b16-0410-ab1d-fd04ec2748df
Merge branch 'master' of https://github.com/uqfoundation/pyina