Factorize all the vtkUniformXXX classes.
Make use of the new vtkUniform templated class.
Leftover vtkUniformInt
Correct VTK missing symbol.
Minor factorisation.
Correct operator overloading pb on Windows
Remove warnings due to vtk macro
Merge pull request #106 from papadop/vtkUniform

Factorize all the vtkUniformXXX classes.