Correct AIS Msg9 (SAR Aircraft) rendering and query.
Merge branch 'master' of https://github.com/OpenCPN/OpenCPN into mainline

Conflicts:
	include/AIS_Target_Data.h
	src/AIS_Decoder.cpp
	src/AIS_Target_Data.cpp
	src/OCPNListCtrl.cpp
	src/chcanv.cpp