CPDictionary -initWithObjectsAndKeys: skip a nil key instead of breaking
Merge pull request #1614 from cacaodev/CPDictionary-initWithObjectsAndKeys

CPDictionary -initWithObjectsAndKeys: do not treat a nil value as a final value
Custom system cursors to use sprited png's for non IE browsers
Merge pull request #1764 from BlairDuncan/pngSystemCursors

Custom system cursors to use sprited png's for non IE browsers