Upgrade to NumPy 1.9.2
Created by: msmolens
This PR upgrades from NumPy 1.4.1 to NumPy 1.9.2. This allows compiling Slicer with NumPy enabled in Visual Studio 2013. (However, beware the NumPy test failures with Visual Studio 2013 listed in 722397a4.)
Additionally, the Python package 'nose' is now installed into Slicer's embedded Python. Including nose allows running NumPy unit tests inside Slicer's Python environment.
Finally, a Python build configuration problem that prevented building NumPy 1.9.2 on Windows in Debug configuration is fixed.