rc632:
- fix handling of timeout (program timer of RC632)
- add a timeout tolerance factor that can be user-specified
- make sure interrupt mode for timer wait works

cm5121:
- fix handling of TX or RX > 0x7f [buffer length in atmel chip?]

iso14443a:
[none]

iso14443b:
- implement 'option 2' frame markers
- test anticollission (need multiple tags)

iso15693:
- implement anticollision
- implement all the rest

mifare_clasic:
- test 
- try to auto-detect 1k/4k
- try to distinguish mifare ultralight and mifare classic in/after anticol

tcl:
- implement pps for asymmetric (rx/tx) speeds

openct:
- add ifdhandler driver

other:
- implementation of code for various passive tags
- documentation
- add notion of 'asic implementation' for specifying reader-specific
  initialization values such as mod_conductance
- abstract a read single block / read multiple block API where l2/proto
  layer can provide multi-block function (e.g. iso15693), which will be
  emulated in case there only is a single-block function
- switch over to use of rfid_buf structure, similar to linux skb.  upper
  layers have sufficient headroom in order to have lower layers add protocol
  headers in front of a packet
- implement software checksumming support.  The reader should be able to
  indicate whether it supports hardware checksum generation / verification.
- application software should be able to override hardware csumming on request
- implement some auto-calibration mode where the user is requested to leave a
  single PICC/VICC on the reader and the software iterates through various
  mod_conductance and bitphase values to see whether it can calibrate to a given
  [new] card. The resulting calibration values are printed by the program.