Added match function for tracking so state is not kept
removed duplicate code
Core builds shared, track can read image list
Fixed copyrights
add missing include
convert to BSD license
Merge branch 'dev/maptk-fixes'

Fixes to allow VisCL to integrate with MAP-Tk

* dev/maptk-fixes:
  convert to BSD license
  add missing include
  Fixed copyrights
  Core builds shared, track can read image list
  removed duplicate code
  Added match function for tracking so state is not kept