Convert Sparkle to ARC, take three.
Merge branch 'master' into ARC
Merge branch 'master' into ARC
Force Xcode to use spaces on source code files.
Merge branch 'master' into ARC
Fix a release bug.
Merge branch 'master' into ARC
Merge branch 'ARC' of https://github.com/MaddTheSane/Sparkle

* 'ARC' of https://github.com/MaddTheSane/Sparkle:
  Fix a release bug.
  Force Xcode to use spaces on source code files.
  Convert Sparkle to ARC, take three.