px_uploader.py:Speed Improvments on Serial
px_uploader.py:Speed Improvments on Serial

  The __getSync was costing about 16Ms per call.
  The commit uses a window based approch allowing
  the SYNC,<results> to be read all at one time.
  and delaying for programing based on transport
  time + 1 Ms;
  THe improvment at 2Mbps is >4 minutes to ~37
  seconds

Aerotenna/Firmware,acfloria/Firmware,Aerotenna/Firmware,krbeverx/Firmware,PX4/Firmware,dagar/Firmware,PX4/Firmware,dagar/Firmware,krbeverx/Firmware,mje-nz/PX4-Firmware,mje-nz/PX4-Firmware,PX4/Firmware,acfloria/Firmware,dagar/Firmware,mje-nz/PX4-Firmware,mje-nz/PX4-Firmware,Aerotenna/Firmware,PX4/Firmware,krbeverx/Firmware,acfloria/Firmware,PX4/Firmware,acfloria/Firmware,mje-nz/PX4-Firmware,acfloria/Firmware,krbeverx/Firmware,acfloria/Firmware,Aerotenna/Firmware,mje-nz/PX4-Firmware,krbeverx/Firmware,acfloria/Firmware,krbeverx/Firmware,krbeverx/Firmware,dagar/Firmware,Aerotenna/Firmware,PX4/Firmware,Aerotenna/Firmware,dagar/Firmware,dagar/Firmware,Aerotenna/Firmware,PX4/Firmware,dagar/Firmware,mje-nz/PX4-Firmware