Tested Xcode 6b
Get rid of Sparkle’s custom binary stripping settings, since they were causing trouble with repeated compilations generating errors. Instead, we can rely on NNW’s Copy Phase for the Sparkle framework to strip symbols as needed.
Removed redefinition of DEBUG from SUUpdater.h, which broke our use of #ifdef DEBUG in multiple places in our code. Grr...
Added tests for comparisons of X.Y.Z.Build# style version numbers.