- split the data structures that actually constitute a mesh

(MVert,MFace,etc) off into DNA_meshdata_types.h, to isolate areas
    of source that actually edit mesh *data* vs. areas that just edit
    mesh object information.

source/blender/src/drawmesh.c

@@ -52,6 +52,7 @@
 #include "DNA_lamp_types.h"
 #include "DNA_material_types.h"
 #include "DNA_mesh_types.h"
+#include "DNA_meshdata_types.h"
 #include "DNA_object_types.h"
 #include "DNA_property_types.h"
 #include "DNA_scene_types.h"