- License is GPL, simplify the license header to make it clear
- Add myself to license header, clarify who did what
- Use 64 bit PTS
- Move mouse bitmaps to the mouse cursor painting function. Make them
  const again
- Properly detach X11 from the shared memory segment on close
- Destroy X11 image on close

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@7296 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b