* 3D view Mesh menu works again, but incomplete.
* Add Properties and Toolbar to 3D View menu.
* Added "specials" menus back, vertex/edge/face and general.
* Various fixes in existing mesh operators, some were not working.
* Add MESH_OT_merge.
* Merge all subdivide ops into MESH_OT_subdivide, subdivide code
changes to make smooth + multi give good results.
* Rename all select inverse ops to *_OT_select_inverse.
* Fix "search for unknown operator" prints at startup, and some
warnings in py code.
* Don't run .pyc files on startup.
* Remove unused image window header C code.