New version of VTK visualization system for octave

Hi all,

New version of octaviz (suggestions for a new name are welcome), is available 
at http://vision.gel.ulaval.ca/~tdragan/octaviz.html.

Major improvements are:

- More natural syntax (many thanks to Paul Kienzle who made it possible)
	Methods in vtk objects now can be called with the same syntax as in C++, for 
example
           vtkObjectInstance.MethodName(param1,param2,...)
        Static members are not supported with the new syntax

- Methods from superclasses are available in derived classes

- Online help is available for both vtkClasses and methods
       help VtkClass displays help for the class VtkClass
       VtkClass("List")  lists methods of the class VtkClass
       VtkClass("MethodName","Help") displays help for the method 
VtkClass.MethodName

There are two more examples, plot3 and trisurf that emulate (somewhat) 
corresponding m**lab functions. (you can test plot3 with the following 
command plot3( rand(10,1), rand(10,1), rand(10,2), 'r*' ). See somb.m for an 
example of trisurf use).

I would greatly appreciate any comments, suggestions, improvements, bug 
reports and building problems reports.

Regards,

Dragan