message: Add named Doxygen section for named mesh constructors
diff: @@ -496,7 +496,12 @@ public:
  /// Move constructor, useful for using a Mesh as a function return value.
  Mesh(Mesh &&mesh);
  - // Named constructors, each of the below uses the move constructor
  +
  + /** @name Named mesh constructors.
  +
  + Each of these constructors uses the move constructor, and can be used as
  + the right-hand side of an assignment when creating new meshes. */
  + ///@{
  /** Creates 1D mesh , divided into n equal intervals. */
  static Mesh MakeCartesian1D(int n, double sx = 1.0);
  @@ -540,6 +545,8 @@ public:
  depending on the configuration. */
  static Mesh MakeSimplicial(Mesh &orig_mesh);
  + ///@}
  +
  /// Construct a Mesh from the given primary data.
  /** The array @a vertices is used as external data, i.e. the Mesh does not
  copy the data and will not delete the pointer.
  