Incorrect Orbit planets lines drawing with not stereo projection modes

[J.L. Canales]

Release: 0.10.5

Switch the projection mode to Perspective or Hammer-Aitoff, zoom out and turn off ground rendering and atmosphere. You should see horizontal lines where orbits are off the screen.

I could see this effect in UBUNTU and windows 7.
I searched in the source code and I think it could be related with the method StelPainter.drawFromArray with DrawingMode StelPainter::LineStrip

console log:
2010-11-06T11:54:49
Linux version 2.6.32-21-generic (buildd@rothera) (gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5) ) #32-Ubuntu SMP Fri Apr 16 08:10:02 UTC 2010
Compiled with GCC 4.4.3
Qt runtime version: 4.6.0
Qt compilation version: 4.6.0
Addressing mode: 32-bit
MemTotal: 2060112 kB
MemFree: 794440 kB
SwapTotal: 2000052 kB
model name : Intel(R) Core(TM)2 CPU T5500 @ 1.66GHz
cpu MHz : 1667.000
model name : Intel(R) Core(TM)2 CPU T5500 @ 1.66GHz
cpu MHz : 1000.000
01:00.0 VGA compatible controller: nVidia Corporation G72M [Quadro NVS 110M/GeForce Go 7300] (rev a1)
Kernel driver in use: nvidia
Kernel modules: nvidia-current, nvidiafb, nouveau
./stellarium
 -------------------------------------------------------
[ This is Stellarium 0.10.5 - http://www.stellarium.org ]
[ Copyright (C) 2000-2010 Fabien Chereau et al ]
 -------------------------------------------------------

[Fabien Chéreau (xalioth)]

The code related to orbit display is quite crappy. I just added a hack to avoid the horizontal lines when using projections with discontinuities like Hammer-Aitoff, but in the longer term the whole stuff needs to be recoded.