[vtkusers] New reader for VTK - vtkMINCImageReader

[David Gobbi]

Hello MINC users,

I have just committed a vtkMINCImageReader to VTK cvs.
For those who don't know, MINC is a NetCDF-based
image format for multi-dimensional image volumes, and
MINC files end in ".mnc".

The reader provides access to all of the MINC attributes,
and it has a "SetFrameNumber()" method to select
which time index to use for files that include a time
dimension.

A writer is in the works, but I can't say when it will be done.

 - David