[pygtk] Use of C++ "private" keyword in API.

[Murray Cumming]

The use of the C++ private keyword is causing a build failure in Glom
with the latest pyobject:

  /*< private >*/
      /* using union to preserve ABI compatibility (structure size
       * must not change) */
    union {
        GSList *closures; /* stale field; no longer updated DO-NOT-USE!
*/
        PyGObjectFlags flags;
    } private;

Could this be renamed, please.

-- 
Murray Cumming
murrayc at murrayc.com
www.murrayc.com
www.openismus.com