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
Add internal AlphaBlend Function for All device
Screen orientation, save OS orientation on startup and restore it on shutdown.
  this is needed for allow use landscape mode with Oudie 2 device.