Removing $PY_VER from build.

We are on Python 2.7 always now.
Manually updating nupic.core SHA.

This is a test.
Merge pull request #1535 from rhyolight/update-sha

Combo of removing py_ver and updating core sha.
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 moving average code to remove use of numpy.
Remove unused import.
Updates nupic.core to 81bb912506e79e2c85b9c0e5cadc3e904dfc3bc0.
Merge pull request #1539 from numenta-ci/core-update-sha

Updates nupic.core to latest built SHA.
Fix error when static method compute is called with integer total.
Bug fix.
No need to specify ${PROJECT_BINARY_DIR}
Merge pull request #1538 from scottpurdy/moving-average

Updates moving average code to remove use of numpy.
Merge pull request #1542 from oxtopus/fix-test-targets

No need to specify ${PROJECT_BINARY_DIR}
Add .dockerignore to prevent expanding build context for docker
Merge remote-tracking branch 'upstream/master' into vagrant-coreos-docker