Hard Fork @ block 12,400 dropping difficulty retarget to 36 blacks, down
    from 2015
Testnet port value of 119985 is too long for 'unsigned short', changed
    to 'unsigned long' to compensate. Probably doesn't matter as testnet
    is disabled.  This fixes the warning, though.

        src/protocol.h:21:22: warning: implicit conversion from 'int' to
          'unsigned short' changes value from 119985 to 54449