Added functions for stars option.
Added "stars" to MYOPTIONS.
Removed x11-lib category.
Added a comment.
Added description to option "stars".
Added stellarium star catalogs to DOWNLOADS.
Fixed exlib.
Ficed doins in stellarium.exlib
Merge branch 'testing'
Work on the stellarium option "stars" finished.
Added emagicdocs to stellarium.exlib to install docs.
Added blank line on bottom of exhereses.