fix possible Crash in BtHandler.
fix possible Crash in McReady.cpp, see one time only, probably overflow elsewhere...
Makefile : Add .PHONY cppcheck
Fix bug not showing task lines in target dialog is DrawTsk flag was unselected
Merge branch 'V50-update' of https://github.com/brunotl/LK8000 into up50
Allow to use Optimized route in glider mode.
Allow to use TimeGates in Glider mode.