ENH: Add Python Wrappers for Mesh Source Classes

This patch adds python wrappers for the itk::RegularSphereMeshSource
and itk::SphereMeshSource classes.  Additionally, tests are added
to ensure that the wrapped classes instantiate without error.

Modules/Core/Mesh/wrapping/itkRegularSphereMeshSource.wrap

@@ -0,0 +1,9 @@
+itk_wrap_include("itkMesh.h")
+
+itk_wrap_class("itk::RegularSphereMeshSource" POINTER)
+  foreach(d ${ITK_WRAP_IMAGE_DIMS})
+    foreach(t ${WRAP_ITK_REAL})
+      itk_wrap_template("M${ITKM_${t}}${d}" "itk::Mesh< ${ITKT_${t}},${d} >")
+    endforeach()
+  endforeach()
+itk_end_wrap_class()

Modules/Core/Mesh/wrapping/itkSphereMeshSource.wrap

@@ -0,0 +1,9 @@
+itk_wrap_include("itkMesh.h")
+
+itk_wrap_class("itk::SphereMeshSource" POINTER)
+  foreach(d ${ITK_WRAP_IMAGE_DIMS})
+    foreach(t ${WRAP_ITK_REAL})
+      itk_wrap_template("M${ITKM_${t}}${d}" "itk::Mesh< ${ITKT_${t}},${d} >")
+    endforeach()
+  endforeach()
+itk_end_wrap_class()

Modules/Core/Mesh/wrapping/test/CMakeLists.txt

@@ -20,3 +20,7 @@ itk_python_expression_add_test(NAME itkVTKPolyDataMeshIOPythonTest
  EXPRESSION "instance = itk.VTKPolyDataMeshIO.New()")
 itk_python_expression_add_test(NAME itkTransformMeshFilterPythonTest
  EXPRESSION "instance = itk.TransformMeshFilter.New()")
+itk_python_expression_add_test(NAME itkRegularSphereMeshSourcePythonTest
+ EXPRESSION "instance = itk.RegularSphereMeshSource.New()")
+itk_python_expression_add_test(NAME itkSphereMeshSourcePythonTest
+ EXPRESSION "instance = itk.SphereMeshSource.New()")