Add the last missing PW2 model.
Don't bundle launchpad on non-legacy Kindles
Tweak the Kindle startup scripts

Besides a few sanity fixes, this adds logging, doesn't flood
KUAL's log anymore, and handles KUAL-only code-paths properly.
There's a bunch of maybe-no-terribly-necessary sleeps in there,
but in general they help avoid weird crap happening.