[vtk-developers] New PLOT3D reader.

[Berk Geveci]

I just commited my changes to vtkPLOT3DReader. As I mentioned
before, it now supports:

- multigrid (each block is one output)
- ascii
- fortran-style byte counts
- little/big endian
- i-blanking (partial)

The interface changed a bit. I removed the following:

(Set/Get)FileFormat -replaced by multiple options-
(Set/Get)FunctionFileName -was not used-
(Set/Get)VectorFunctionFileName -was not used-
(Set/Get)GridNumber -now all grids are read (one per output)-
(Set/Get)[Fsmach | Alpha | Re | Time] - since there is one of these
      for each grid, I now put them in an array called Properties in
      vtkDataObject::FieldData of each output-

I added:

(Set/Get)BinaryFile -ascii or binary-
(Set/Get)MultiGrid  -does file contain number of grids?-
(Set/Get)HasByteCount -fortran style byte counts?-
(Set/Get)IBlanking -is there iblanking info in the file-
(Set/Get)ByteOrder

The reader is a lot more robust now (specially when reading
binary files). If you run into problems, let me know.

-Berk