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this brings in vs2015 support.

A corresponding change in application makes ParaView look for them
where we install them here.

(cherry picked from commit 98966cbf)

ParaView 5.5 and later link to the guide and tutorial from
paraview.org instead.

Scott Wittenburg authored Mar 02, 2018 and Cory Quammen committed Mar 04, 2018

(cherry picked from commit c2823a67)

Scott Wittenburg authored Feb 25, 2018 and Cory Quammen committed Mar 04, 2018

(cherry picked from commit 23ba741b)

Ben Boeckel authored Feb 27, 2018 and Cory Quammen committed Mar 04, 2018

(cherry picked from commit 42288e40)

besides version numbers, remove the old patches as they
have been upstreamed.

adds an option plus the supporting openvr lib
along with some required patches for their CMake
files.

VTK-m is becoming a submodule of VTK so will be built as a part of
ParaView when it is enabled.  The vtkm project in the superbuild is
now a dummy project that controls whether it is enabled in the ParaView
build.

Made v5.4.1 the default ParaView tag to build.