made all data adding functions accept a name such as add_mesh or add_curve, previously only some datatypes adding functions accepted a name.

also updated the Bpy.py epydocs

source/blender/src/editobject.c

@@ -2673,7 +2673,7 @@ void convertmenu(void)
 						mb= ob1->data;
 						mb->id.us--;
 						
-						ob1->data= add_mesh();
+						ob1->data= add_mesh("Mesh");
 						G.totmesh++;
 						ob1->type= OB_MESH;