#i123840# prefer NSZero* constants over open coded altetnatives
#i119006# delay AOO/Mac initial event until the app has finished lauching

delaying the initial event prevents complaints from OSX>=10.7's "windows restore"
feature to recur infinitely. Apparently OSX cleans things up for us just before
we get the applicationDidFinishLaunching() callback. This should solve one of the
most popular support questions for AOO on Mac for good.