Include PYTHON lib
Fixup python path and ensure it's included everywhere
Merge pull request #1536 from oxtopus/python-path

Include Python lib path
Updates nupic.core to 81bb912506e79e2c85b9c0e5cadc3e904dfc3bc0.
Merge remote-tracking branch 'upstream/master' into issue-1489-version
Merge pull request #1539 from numenta-ci/core-update-sha

Updates nupic.core to latest built SHA.
Merge remote-tracking branch 'upstream/master' into issue-1489-version