[vtkusers] Include files

[John Drescher]

> I'm not using Cmake.  Possibly I could be, but by default the IDE Qt
> supplies, Qt Creator, uses .pro files, from which qmake creates the
> makefiles.  The .pro project files are very simple (Qt Creator takes care of
> a lot of the ugly details), and I'm quite keen to use Qt Creator for my Qt
> stuff.  I've looked at a couple of CMakeLists.txt files, and the complexity
> is a bit daunting.  Do you advocate using Cmake?
>

Qtcreator can use CMake files. At least recent versions.

John