access datalist flags via atomic pointer access funcitons, instead of

access datalist flags via atomic pointer access funcitons, instead of

Wed Nov 23 17:34:01 2005  Tim Janik  <timj@imendio.com>

        * glib/gdataset.c: access datalist flags via atomic pointer access
        funcitons, instead of acquiring the dataset lock. this is faster and
        also matches the atomic pointer readouts in gdatalistprivate.h and
        direct pointer modifications required by gobject.c.