OS X 10.9 fix for 'The domain/default pair does not exist' error.
Better fix for the AppleAquaColorVariant error. Now takes into account the case where the value doesn't exist in NSGlobalDomain.
Removed debug output.
Fix for counting homebrew and local packages double.
Corrected whitespace.
Fix for empty OS X  variable
Updated OS X screenshot code to support multiple desktops.
Clean up OS X multiple displays screenshot code.
More OS X screenshot code cleanup.
Merge pull request #109 from crahan/osx109fix

Osx109fix