Beginning pic14, pic12 integration tests.
Tested PIC12 slave code and fixed off-by-one error in assembly
code.  Pic24 can now successfully call endpoints in pic12.
Finished reducing the size of the MIB code on the pic12 and its ram
usage.  It now fits in bank1 and common (<48 bytes).  A little more
work needs to done to make sure the compiled stack fits in common too
but it's mostly good.  I reworked the i2c and mib code on pic24 and pic12
to handle the consolidation.  PIC24 calling PIC12 endpoint now works
and is tested.