Add Vertical Situation Bar (VSI) to HSI screen
small fix

"LockTaskData" sections need to be rewrite for less contention,
maybe a solution is make copy of needed data at the begining ...
Indentation: 4 spaces ISO tab
nmeaistream, restore separator after use.
Task and WayPoint data read only from one critical section
C-Probe device : wrong TAS an few other small fix
Glide Slope bar optimization
VSI optimized
Fixed visualization with other resolutions
Merge branch 'vsi' of https://github.com/alus-/LK8000 into checked
Merge branch 'CProbe-IAS' of https://github.com/brunotl/LK8000 into checked
Fix do not show 0.0 safety Mc, because it is not a safe MC.
This is configured in safety parameter, but can also be set to 0. In such case..