VDrift 2012-07-22 Release

[Timo 6]

OS X build finally up! Get it here: http://sourceforge.net/projects/vdrift/f...g/download
Built from https://github.com/Timo6/vdrift-mac/comm...407d7a2634 and https://github.com/VDrift/vdrift/commit/...7cae1d10b0 which hopefully corresponds to 2012-07-22c, and with Xcode 4.4.1 on OS X 10.8. If anyone has access to older machines I would be interested to find out which OSs it is compatible with - the deployment target is 10.4 (Tiger) but I don't know if it actually works. I have signed it with my Developer ID, so it should play nicely with Mountain Lion's Gatekeeper.

OS X changes:
* Readme updates
* Move data inside app bundle (VDrift.app/Contents/Resources/data)
- better user experience: drag and drop app neatly to Applications
- old method still works: if no data at above path, look for it next to VDrift.app
* Use git stuff for version, revision (in log.txt)
- Version: last tag
- Revision: commits since last tag + latest commit SHA + modified files or not
* Dependancy updates
- Archive: 3.0.4
- Boost: 1.49.0
- Bullet: 2.80
- Curl: 7.26.0
- GLEW: 1.7.0
- Ogg: 1.3.0
- SDL: 1.2.15
- SDL_gfx: 2.0.23
- SDL_image: 1.2.12
- Vorbis: 1.3.3