(chise_open_decoding_table): Use `CHISE_Decoding_Table *' instead of

(chise_open_decoding_table): Use `CHISE_Decoding_Table *' instead of
`CHISE_Decoding_Table **' as the type of the first argument.
(chise_open_feature_table): Use `CHISE_Feature_Table *' instead of
`CHISE_Feature_Table **' as the type of the first argument.
(chise_ft_iterate): Modify for the structure `CHISE_Feature_Table'.
(chise_open_attribute_table): Use `CHISE_Attribute_Table *' instead of
`CHISE_Attribute_Table **' as the type of the first argument; modify
for the structure `CHISE_Feature_Table'.
(chise_close_attribute_table): Modify for the structure
`CHISE_Feature_Table'.
(chise_get_attribute_table): Likewise.
(chise_put_attribute_table): Likewise.