errors when compiling against glm

[elliotwoods]

i get the following errors when installing glmpython against current glm master branch: https://gist.github.com/elliotwoods/68caea5535584d71ec976ab07414d72b

considering the the permissive license of glm, i'd suggest either:

1. packaging the suggested version of glm with this repo
2. setup.py can pull the correct version of glm for when you're building glmpython

[Queatz]

Looks like they've added types named the same as in this library. I've just committed a simple fix via namespacing. Let me know if that resolves the issues.