Clean up of USB stuff that we won't use (at least at this point). The
USB stuff is still kept in the usb-support branch.
First attempts on the main automaton.
Some minor things in beeclickarm.
Initial commit of the Java binding.
Continuation of the Java-binding.
Continuation of the Java-binding and some updates in the C part.
It seems that the communication protocol between PC and the board works
now. The next plan is to implement the SPI-based communication with the
RF board and to change machine.c to use TX and RX interrupts.