New Gaim buildscript

I’ve revamped my buildscript so it is now easier for me to create branch builds and builds of earlier revisions than the most current. The filenames now reflect this, and it should be easy to discern which builds come from which branch. I’ll update them once in a while, but let me know if you want anything in particular here.

Edit: The absolute bleeding-edge-crash-n-burn-builds come from the trunk. So what was previously the gaim-2.0.0dev-builds are now called gaim-svn-trunk.*