Replaced tabs in FPGA code
Added quadrature support to joyos

- New quadrature_read and quadrature_reset functions
- supports quadrature input on 0-7 and 24-27
Added quadrature support to FPGA

- new FPGA addresses for reading quadrature values
Merge linerva:~/joyos
Initial playing field code - basic ball dispenser
Added basic gearbox/quadrature code
Code for a lecture demo and playing field demo
Somewhat working proof of concept playing field
Ripped out parts of RF driver for playing field

- Started adding logic to detect which robots are playing
- Handle rf_start and rf_stop cleanly (i.e. don't halt/panic
  on rf_stop so we don't have to keep restarting the playing
  field happyboard)
Lever debounce, scores, ownership-based dispensing
Balls remaining and data printout
Updated rf packet, fixed gearbox bug

- Changed rf packet to hold playing field data
- Repeatedly quadrature_reset() during 10s exploration period
  so that gearbox spins don't count
Added dispenser servo constants
Playing field data printf format changes
Merge branch 'master' of github.com:sixtwoseventy/joyos into playingField2012

Conflicts:
	src/drivers/rf.c
	src/inc/packet.h

Added rfmon program for viewing RF data
Added exploration scoring
Added mining rate limit and power-up self test

- 5 ball per minute rate limit
- changed output to show balls available within the
  rate limit time, rather than ALL balls remaining
  in that territory
- added servo test on startup and ability to test
  the sensors
Update uround_start()
Some ball scoring stuff
merge conflict, chose Scott's version of rf.c