Removed vtk.qt - Qt 3 is not supported in VTK

Change-Id: I25d215da7b5e407419a0eeb6942c276d0d851bdc
Added facility to export custom hints for modules

Added ${vtk-module}_WRAP_HINTS as a module specific hints file, to allow
modules to set a custom wrapping hints file (as external projects such
as ParaView have done for many years).

Also cleaned up the installation code to ensure the hierarchy and hints
files are installed when appropriate.

Change-Id: Ie019fab326a3072a33bdc2aaf066180b2fa32eb1
Fixed copy/paste error - WRAP_HINTS install path

Thanks to Utkarsh for spotting the error, we need a path for the build
tree and a path for the install tree for any custom hints file.

Change-Id: I57b49a7a91da75286136652fdb65d89b54b15217
These should be appending the WRAP_HINTS to the vars

The previous version would have caused bugs when there was a custom
hints file and some CMake code to export.

Change-Id: Ie33b73be4505c0f483f4f2d9727cce744fee1005
Merge topic 'python-install-rules' into master

7f7586e4 Removed vtk.qt - Qt 3 is not supported in VTK
Simplify vtkWrapHierarchy invocation

Run vtkWrapHierarchy as a custom command in each module library target
instead of as a POST_BUILD event.  Use a stamp file as the output so the
actual hierarchy file may be modified only when its content changes.
Depend on all the input header files, vtkWrapHierarchy binary, command
args/data files, and other hierarchy files so that the command re-runs
when one changes.

Drop unnecessary shell escaping workarounds.  Drop extra target-level
dependencies that are implied by linking since the switch to using
${vtk-module}_LINK_DEPENDS to construct the list of hierarchy files from
dependencies.

When building with the CMake Ninja generator, work around an apparent
limitation by exposing the real hierarchy file as an output of the
custom command.

Change-Id: I8bda94e5a40d89ff6758d3a0c44a723f18e94f58
Merge topic 'python-hierarchy-dep' into master

d3155f9b Simplify vtkWrapHierarchy invocation
Merge topic 'python-custom-hints' into master

ed0d4e81 These should be appending the WRAP_HINTS to the vars
e5323fc7 Fixed copy/paste error - WRAP_HINTS install path
95d4ca64 Added facility to export custom hints for modules