has become an opaque data type and the underlying filedescriptor must be
obtained by using the accessor function lqt_fileno instead of the ".streamer"
member (which is no longer available). However, libquicktime 0.9.8 has not
been released yet. IF libquicktime is being used then test for lqt_fileno()
being present and define HAVE_LQT_FILENO for use in 1 place.
When libquicktime has a release this can all go away when the required version
of libquicktime is bumped to 0.9.8
