Cleanup OggTheora support.

There was no way to know if vtkIOMovie had OggTheora support enabled. Hence
adding a vtkIOMovieConfigure file that has this configuration made available.
Now when OggTheora support is available, vtkIOMovieConfigure.h defines
VTK_HAS_OGGTHEORA_SUPPORT.

Change-Id: I1efe54cb43f3ea09ab36a7bfa5a6a13d9b5c0593

IO/Movie/CMakeLists.txt

@@ -8,7 +8,10 @@ set_source_files_properties(
   ABSTRACT
   )
 
+set (VTK_HAS_OGGTHEORA_SUPPORT)
+
 if(vtkIOMovie_vtkoggtheora)
+  set (VTK_HAS_OGGTHEORA_SUPPORT TRUE)
   list(APPEND Module_SRCS vtkOggTheoraWriter.cxx)
 endif()
 
@@ -23,6 +26,14 @@ if(WIN32 AND VTK_USE_VIDEO_FOR_WINDOWS)
   list(APPEND Module_SRCS vtkAVIWriter.cxx)
 endif()
 
+# Configure the module specific settings into a module configured header.
+configure_file(
+  ${CMAKE_CURRENT_SOURCE_DIR}/vtkIOMovieConfigure.h.in
+  ${CMAKE_CURRENT_BINARY_DIR}/vtkIOMovieConfigure.h)
+
+set(vtkIOMovie_HDRS
+  ${CMAKE_CURRENT_BINARY_DIR}/vtkIOMovieConfigure.h)
+
 vtk_module_library(vtkIOMovie ${Module_SRCS})
 
 if(WIN32 AND VTK_USE_VIDEO_FOR_WINDOWS)

IO/Movie/vtkIOMovieConfigure.h.in

+/*=========================================================================
+
+  Program:   Visualization Toolkit
+  Module:    vtkIOMovieConfigure.h.in
+
+  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
+  All rights reserved.
+  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
+
+     This software is distributed WITHOUT ANY WARRANTY; without even
+     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+     PURPOSE.  See the above copyright notice for more information.
+
+=========================================================================*/
+#ifndef __vtkIOMovieConfigure_h
+#define __vtkIOMovieConfigure_h
+
+/* This header contains build settings for the vtkIOMovie module */
+
+// If vtkOggTheoraWriter is enabled.
+#cmakedefine VTK_HAS_OGGTHEORA_SUPPORT
+
+#endif