Add a GIT_BUILD_NUMBER to the environment variables
Refactor to execute solely in Python
Add GIT_BUILD_STR based on the hash if available
Refactor how GIT_BUILD_STR is generated
Remove debug output
Move this to be with the rest of the non-platform specific code
Use a string here to avoid complaints from subprocess
Remove GIT_BUILD -- kinda useless
Use --long so we always have a three-part describe

Thanks @asmeurer for the idea!
Switch to GIT_DESCRIBE_ as the prefix
Capture stderr (thanks @shoyer)
Switch out to == after @asmeurer schooled me on is and ints
Merge pull request #147 from tswicegood/feature/git-version

Add GIT_ environment variables to conda-build