Cleanups. Update comments and remove obsolete files.
Merge branch 'master' of github.com:d2rk/bbos
Cleanup header files.
Just threads, not sorted_threads.
First working messaging.

* Fix BBOS API
* Remove unnessary modules such as port.c, message.h
* Fix working messaging
* Fix buttons driver
Group all OS related types.
Group all OS related types.