Changed the function LookupGeoidSeparation(lat,lon) in Geoid.cpp to
interpolate the the actual position (lat,lon) between the 4 nearest
points in the EGM96 matrix.
Merge remote branch 'upstream/master'
Merge commit '8adb1953da38e40789905d5db836b6a94a6bc05e'
Merge commit '77fb39d0b7d619f8f82c3ac49c0503e748dac55a'
New splash screens for v4 by Jiri Bergman
Update Portuguese by Joao Rosa, German by Ernst, Russian by Vyacheslav Kopchynskyy and Konstantin Gonacharenko
Update version 4, and fix MapWndProc PAN mode threshold timer for PC only, lowered to 50ms for smoother moving.
	modified:   Draw/MapWndProc.cpp
Fix sonar active for SIMMODE, CAR and GA mode, and only when FreeFlight was detected in glider mode.
	modified:   Sonar.cpp
Update languages FRENCH by Dany Demarck, and Italian by Michele Borghi
improved drawing of Glide polar in statistics dialog
change step to 0.25 for UTCOffset parameter
Update README
Update dutch translation by Rick Boerma
Update translation GREEK by Thomas Manousis
Fix : Nearest Waypoin don't work if we have only marker
This is version 4.0A
Advance to next 4.1a0 in a new branch
Fix 4.0 small bug not resetting correctly the TRI after change of screen resolution.
	modified:   DrawTRI.cpp
Merge branch 'NearestMk' of http://github.com/brunotl/LK8000
Target dialog for AAT sector fixed

Before the change a Target dialog for narrow AAT sector (like 90o - 180o) was
centered at the center of the circle used to draw the sector and zoomed
to view 2x its radius. Because of that sector was really hard to manage in
AAT tasks. Now the same sector is centered on the screen and stretched on full
screen.