Upgrade XADMaster, UniversalDetector, Sparkle. Upgrade Project.

Upgrade XADMaster, UniversalDetector, Sparkle.
- http://code.google.com/p/theunarchiver/source/detail?r=30ed69d3c52f945ebc0af94491493b69fa122018

- https://github.com/andymatuschak/Sparkle/commit/16cdd6bf643db1098e42ae205e91ab3ef87c62cb

Initial Commit.
- Fixed a few warnings and compile errors to get the project running on Mac OS X 10.8.2 Xcode 4.5.1 SDK 10.5