ENH: Merge changes from main tree into VTK-5-0 branch. (cvs -q up -j1.30...

ENH: Merge changes from main tree into VTK-5-0 branch. (cvs -q up -j1.30 -j1.31 GUISupport/Qt/CMakeLists.txt)

GUISupport/Qt/CMakeLists.txt

@@ -120,6 +120,7 @@ IF(BUILD_QVTK_PLUGIN)
   TARGET_LINK_LIBRARIES( QVTKWidgetPlugin 
     ${QT_LIBS}
     vtkRendering
+    vtkIO
     vtkImaging
     vtkGraphics
     vtkFiltering