A full robot vs. robot game now works between two Treos. Added UI to
choose BT as transport mechanism, and added new send proc to establish
socket connection between host and guest. Works only for two devices:
no piconet yet. No error recovery, ability to quit game in middle,
start new game, etc.
deal with the output by removing params where possible and elsewhere
by adding XP_UNUSED macro wrapping __attribute__((unused)). There
should be NO change in function in spite of the large number of files.
