Added Mesh.New() method; can now create new meshes within the module

Changed Object.link() to allow link objects with both BPython-type meshes
Changed Object.getData() to allow retrieving both types of BPython-type meshes

Added new mesh types to Types module

source/blender/python/api2_2x/Mesh.h

@@ -119,5 +119,6 @@ typedef struct {
 PyObject *Mesh_Init( void );
 PyObject *Mesh_CreatePyObject( Mesh * me );
 int Mesh_CheckPyObject( PyObject * pyobj );
+Mesh *Mesh_FromPyObject( PyObject * pyobj );
 
 #endif				/* EXPP_MESH_H */