better data handling using a instance buffer
connect fastForward command for master

(currently unhandled by slave)
back to unsigned char
adding PhTimeCodeTest
fix time sense for 00:00:25:00
handle fastforward and rewind ok
step frame with sony cue ok
sony slave handles varispeed/jog/shuttle

not tested
sony slave handle preset/select command

(not tested)
Merge branch 'mdSync'

* mdSync:
  sony slave handle preset/select command
  sony slave handles varispeed/jog/shuttle
  step frame with sony cue ok
  handle fastforward and rewind ok
  fix time sense for 00:00:25:00
  adding PhTimeCodeTest
  back to unsigned char
  connect fastForward command for master
  better data handling using a instance buffer