Adds mbed 1768 target.
Takes over the makefile refactoring from main tree.
Adds a new method for outputting automata data (a C array). Clones test-aut for the new method.
Adds GPIO handlers for the mbed library. Both event producer and event consumer.
Adds a general memory bit event producer.
Updates mbed and linux target to use the new automata definition. Updates linker script of panda to use the system array.
 Uses new automata target pointer in main.cxx
Makes mbed lpc1768 logging go to the UART0 (for the ttyACM built into the mbed interface).
Adds a new generic update runner method that periodically calls the updatables from a timer. Used for non-blocking updates.
Changes for testing on the mbed lpc1768.