Get path of a python module

This solves several issues related to `RuntimeError: Matching Python module for xxxxxxx not found`. This is crucial for `pip installable` PR as current errors at Travis are caused by these issues (`pip installable` PR doesn't use relative path like `lib\python${PYTHON_VERSION}\nupic`, but where NuPIC is currently installed on system).

Now we get the path of a python module using the own python interpreter, not more using $NTA. $NTA still is used for get `libcpp_region.so`, but in the future this dynamic library goes to the same place that compiled NuPIC modules, i.e. the system default location for python libraries.
Fix for ArrayAlgo.hpp inline asm #defines
Merge pull request #107 from DavidRagazzi/patch-2

Get absolute path of a python module
Merge pull request #108 from wilsonk/arrayalgo-fix

Fix for ArrayAlgo.hpp inline asm #defines
Clarified README
Pipeline trigger
Pipeline trigger part 2
Fixed shell command
Reproduce #106
Recover `zconf.h` files from https://github.com/numenta/nupic/commit/1e609368485dfbcb48
Remove reproduction of #106 after fixed it
Merge pull request #111 from utensil/106-recover-zonf

Recover `zconf.h` in `external`
Merge pull request #110 from DavidRagazzi/patch-3

Fixed shell command
Optimize getPackageDir() function
Updated help text for cmake options to address nupic.core/issues/74.
Updated contributor list!
Changed -- to -D to fix errors found by Utensil.
Merge pull request #119 from baroobob/master

Updated help text for cmake options
Merge pull request #118 from DavidRagazzi/fix-region-impl-factory

Optimize getPackageDir() function
Remove $NTA