Xplanet 1.2.0

Xplanet was inspired by Xearth, which renders an image of the earth into the X root window. All of the major planets and most satellites can be drawn, similar to the Solar System Simulator.
A number of different map projections are also supported, including azimuthal, Lambert, Mercator, Mollweide, orthographic, and rectangular.
Enhancements:
- Added the -grs_longitude option, to specify the longitude of Jupiters Great Red Spot, in System II coordinates. This assumes the Jupiter image has the center of the Great Red Spot at pixel 0 (at the left side of the image) in order to draw it at the right position.
- Added the Icosagnomonic projection, contributed by Ian Turner.
- Fixed a bug where output filenames had an extra digit in some cases.
- Added the bump_map and bump_scale options in the configuration file.
- Added the -glare option to set the size of the suns glare.
- An image map may be specified for the sun in the configuration file now. A shade value is now required for the sun (should be 100, otherwise the sun will have a night side!)
- Added the -arc_spacing option to set the default angular distance between great arc points. It used to be 0.1 degree, so arcs smaller than this wouldnt get drawn.
- Fixed a bug where markers were not aligned properly when using align = "above" or "below".
- Added warnings if options are specified in the [default] section of the configuration file that probably shouldnt be there.