The InsertFunctor for cells was calling localRotateObject() for all references which set the mChanged flag in RefData to true.
Also clean up RefData interface slightly.
Functions compiled as taking a class can't be linked with functions giving a struct, because of the name mangling I'm guessing...
unresolved external symbol "protected: void __thiscall MWWorld::LiveCellRefBase::loadImp(class ESM::ObjectState const &)" (?loadImp@LiveCellRefBase@MWWorld@@IAEXABVObjectState@ESM@@@Z)