(Qconcord_object): New variable.

(Qconcord_object): New variable.
(Qgenre): Likewise.
(Q_id): Likewise.
(Fconcord_ds_directory): Use <char*> instead of <unsigned char*> for
directory.
(add_feature_to_list_mapper): Use <char*> instead of <unsigned char*>
for genre-name.
(Fconcord_feature_list): Likewise.
(Fconcord_make_object): Likewise.
(Fconcord_decode_object): Likewise; use <char*> instead of <unsigned
char*> for feature_name and strid.
(Fconcord_object_get): Use <char*> instead of <unsigned char*> for
c_obj and feature_name.
(Fconcord_object_put): Likewise; use <char*> instead of <unsigned
char*> for c_value.
(struct closure_for_object_spec): Use <char*> instead of <unsigned
char*> for member `object_id'.
(add_feature_to_spec_mapper): Use <char*> instead of <unsigned char*>
for feature-name.
(Fconcord_object_spec): Use <char*> instead of <unsigned char*> for
c_obj.
(func_for_each_object): Cast to avoid warnings.
(Fconcord_foreach_object_in_feature): Use <char*> instead of <unsigned
char*> for genre_name and feature_name.
(concord_name_validate): New function.
(concord_object_validate): Likewise.
(concord_object_instantiate): Likewise.
(syms_of_concord): Add new builtin symbols `concord-object', `genre'
and `=id'.
(structure_type_create_concord): New function.