Octave wrapper

This issue was created automatically from an original Mantis Issue. Further discussion may take place here.

I made a VTK wrapper for octave (http://www.octave.org, octave is interactive numerical computation system very similar and largely compatible with matlab). It is actually hacked tcl wrapper that makes vtk directly accessible from octave with the syntax identical to python's (python examples can be used in octave with almost no changes with the exception of language specific constructs). The sources are available here: http://vision.gel.ulaval.ca/~tdragan/octaviz.html. I would like to have this wrapper included in official VTK sources to make it easier to distribute and to facilitate building & installation. It consist of single C file (an equivalent of vtkWrapTcl.c) and one octave C++ file for graphical subsystem initialization. I'm also willing to support and maintain the wrapper.

Note that there is still work to be done before it is included in VTK, but at this stage the most important are configuration/compilation/installation scripts. I'll make sure that everything works with cmake before submitting the wrapper if it is accepted into vtk (or provide an alternative if the wrapper is to remain an independent project).

Thanks,

Dragan