Adding Celestia v1.6.1 Patches for KDE3 GUI:

- The Celestia patches are in version-specific subdirectories, since
  Celestia (1) is in active development; and (2) doesn't presently
  support a TDE-based GUI.
  So, I'll be adding patches for new Celestia versions as I rebuild and
  upgrade my own machines.
- Corrected errors in the 'ksensors' README file.