GeTagTool Improvements (add shutter lag) and fixes

Fixed possible OutOfRange situation with log offset counts
Fixed situation where a not found GPS Msg stoppped the Offset Process.
It now continues ignoring that picture
Added shutter lag compensation option
Improved Log Messages readability
change frame type to use enum
tweak udp reader to better support split packets
add shp to poly file converter
add shp to poly reprojection support
update mavlink
update flightplanner command display
Merge pull request #482 from wjax/master

GeTagTool Improvements (add shutter lag) and fixes
Merge remote-tracking branch 'upstream/master'