Removing requirements.txt from bdist
Merge pull request #1434 from rhyolight/build-requirements

Removing requirements.txt from bdist
Add NUPIC_CORE_SOURCE as required CLI option to accompany NUPIC_CORE.
Preserve original order of assignments
Docker now does expand ENV variables

Tested this with Docker 1.3.0 and it works fine.
Merge pull request #1452 from oxtopus/build-improvements-issue-1430

Add NUPIC_CORE_SOURCE as required CLI option to accompany NUPIC_CORE.
Merge pull request #1453 from nashamri/patch-1

Docker now does expand ENV variables
Merge branch 'master' into swig2.0.3

Conflicts:
	CMakeLists.txt