* behaviour on empty ipod
* behaviour when no SysInfoExtended
* behaviour when headers are smaller than we expect
* handle BOM markers in UTF-16 strings
* improve error reporting
        - itdb_init on a nano5g/iphone
        - write on a device where we can't generate the hash
* faster itdb_resolve_path (avoid thousands of stat())
* fix smart playlist warnings
* reproduce wuda's photo bug
* reproduce bug with python bindings (#2946863)
* look at rating/playcount bug (#2894898)

* empty playlists?
* playlists added to multiple Itdbs
