Storing Data Stacks inside OSX Bundle

[Sivakatirswami]

I saw that someone else was doing this... you can store a "main" stack 
(which needs to be saved) inside the standalone, splash screen  engine 
stack's bundle... and seems to all work just fine...

This has the obvious advantage of making sure they don't get separated, 
user just sees a single application file.

any caveats to keep in mind? (besides the obvious one of the data stack 
getting out  on upgrade)

skts