References #25 - Attempt to fix environment variables that aren't set.
- The RETROARCH_CONFIG variable wasn't set at all - just dumb.
- The GLINTNESBRANCH variable wasn't getting picked up for some reason, so I set it again using a method I found here: http://stackoverflow.com/questions/307503/whats-the-best-way-to-check-that-environment-variables-are-set-in-unix-shellscr