Added the case numbers to assembly labels.
Fixed a bug with branch tables where PCH needed to be set.
Fixed constant folding to fold recursively.
Fixed a bug in the simulator where WREG was duplicated.
Fixed a bug in the latches of the simulator.
Added a function to show PICOBIT lists stored in memory.
Changed the way register tables are generated, to use the actual
registers and the PIC18 and not the virtual ones used for the CFGs.
Moved the code interpreted by PICOBIT to 0x8000 instead of 0x5000 to
avoid overwriting the vm.