Blender Git Loki

Make requests python package to be detected in the same way as numpy

This solves missing requests package reported on the systems where it's
located in dist-packages rather than in site-packages.

To do this there's now a helper macros which handles both requests and
numpy now and could be used for more packages in the future.

Reviewers: campbellbarton

Reviewed By: campbellbarton

Differential Revision: https://developer.blender.org/D686