Update changes
Restrict selection of waypoints in DoNearest sorted by direction to those in the -60  +60 degrees range.
Previously selecting also those at out back, which made the 50 nearest list sorted by direction very limitated.
	modified:   ../../Calc/DoNearest.cpp
Retunr sorting by direction using +-15 degrees sectors ahead of us.
	modified:   ../../Calc/DoNearest.cpp
	modified:   GetVisualGlidePoints.cpp
Fix visualglide not using correctly waypoints ahead.
The real VG engine is working only now.. giving us more useful informations.

	modified:   GetVisualGlidePoints.cpp