Moving rendering tests to more appropriate places

Many of the OpenGL tests were for RenderingCore API, others were from
RenderingImage and RenderingLabel. Moving them to more appropriate
locations, this makes it easier to validate some of the OpenGL2
implementations now we have a concept of multiple rendering backends.

Change-Id: I48db6a50ddc3d64d899a6b99b8cd21960fa26055

Rendering/Core/Testing/Cxx/CMakeLists.txt

@@ -2,15 +2,26 @@ vtk_add_test_cxx(${vtk-module}CxxTests tests
   FrustumClip.cxx
   Mace.cxx
   RGrid.cxx
-  TestAssemblyBounds.cxx,NO_VALID
-  TestPickingManager.cxx,NO_VALID
   TestActor2DTextures.cxx
+  TestActorLightingFlag.cxx
+  TestAnimationScene.cxx
+  TestAreaSelections.cxx
+  TestAssemblyBounds.cxx,NO_VALID
+  TestBackfaceCulling.cxx
   TestBareScalarsToColors.cxx
+  TestFollowerPicking.cxx
+  TestGlyph3DMapper.cxx
+  TestGlyph3DMapperMasking.cxx
+  TestGlyph3DMapperOrientationArray.cxx
+  TestGlyph3DMapperPicking.cxx
+  TestPickingManager.cxx,NO_VALID
   TestMapVectorsAsRGBColors.cxx
   TestMapVectorsToColors.cxx
   TestSplitViewportStereoHorizontal.cxx
   otherLookupTable.cxx,NO_VALID
   otherLookupTableWithEnabling.cxx,NO_VALID
+  RenderNonFinite.cxx
+  SurfacePlusEdges.cxx
   # TestViewDependentErrorMetric.cxx # Loads of extra deps - move?
   # TestHierarchicalBoxPipeline.cxx  # legacy code
   )