[0/10] Launcher app bundles on OS X

[Per Johansson]

I'm resending this now after testing it with the Mac driver.
They work well together, the launcher bundle will first briefly
appear in the dock, then exit, and the mac driver icon appears.

It's split it up into parts for easier review. I've also tried
to make sure that even if e.g. part 6 fails review, part 1 - 5
can still be applied.

File type associations are not included because I plan to move
that code into the mac driver but haven't gotten around to it yet.

Regards,
-- 
Per Johansson