These typedefs were not used anywhere in the tree. The struct forward
declaration duplicates an identical one at the top of the header.
-struct dictionary ;
-typedef void replace_source_callback (struct casereader *);
-typedef void replace_dictionary_callback (struct dictionary *);
-
typedef void transformation_change_callback_func (bool non_empty, void *aux);
struct dataset * create_dataset (void);
typedef void transformation_change_callback_func (bool non_empty, void *aux);
struct dataset * create_dataset (void);