cleanup: remove unused files from pybuild

the fucntionality changed already, these files are broken/unused.

reference: https://github.com/numenta/nupic/wiki/Configuration-and-Build-System

PS: Numenta: please check you dont use it for internal processes
add a TODO note
removed autobuild directory - replace by Travis CI functionality

https://github.com/numenta/nupic/wiki/Configuration-and-Build-System
move swig sources to common lib
moved same lib includes to common

only apr-1 differs on mac and linux
update swig location
Merge remote-tracking branch 'upstream/master' into cleanup-build
Merge pull request #143 from breznak/cleanup-build

Cleanup build_system