[vtkusers] Python compass widget example

[Anders Wallin]

> Which compiler are you using?
> Try installing:
> libstdc++
> libstdc++-devel

done.
what is the difference between "ccmake ." and "cmake ." ?
the latter gives me some clue of what is wrong:
-- Checking old streams end-of-file bug level
-- Checking old streams end-of-file bug level - failed to compile test
-- Could NOT find OSMesa  (missing:  OSMESA_LIBRARY OSMESA_INCLUDE_DIR)
-- Could not find extension loader.  Extensions disabled.
-- Configuring done
-- Generating done
-- Build files have been written to: /home/anders/Desktop/vtk5.4.2/VTK

whereas the former (from the Readme) doesn't give any warning at all.

AW