Draw glide amoeba shaded area unconditionally, if:
- we are flying
or
- we are in simmode, at least 100m above ground.

	modified:   Draw/DrawTerrainAbove.cpp
TraceThread option inside TraceThread.h , let you use SHOWTHREAD(message) and see where a function is executed, inside which thread.
Of course it should be disabled out of testing purposes.
To be used using Tail.exe on pc, so you can see in real time what is happening .