Added untested Mac OS X Listbox code. Won't compile yet...
Fixed the compiler errors. The Mac OS X Listboxes are created!... but don't show any items. Let's figure out why.
Whoops, forgot to define sysData.selectedIndices() and sysData.selectedTexts() for Mac OS X now that I have those written! Adding items is still a no-op...
Fixed a typo'd selector name related to Listbox selection. Adding items still doesn't work...