[Paraview] Development Install Tree

[Utkarsh Ayachit]

> Do we really need the suggestion of VTK_USE_CARBON=ON any more now that Qt 4.6 supports Cocoa just fine? (There could be a note saying that it should automatically detect your Qt setting, but maybe it's still needed...)

I just verified that's already the case: VTK_USE_CARBON/VTK_USE_COCOA
flags are automatically updated based on whether Qt was built with
Cocoa or Carbon.

Utkarsh