2009-01-20  Ryan Lortie  <desrt@desrt.ca>

        Bug 568394 – dropping the last reference to a stream filter closes the
        base stream

        * gfilterinputstream.h:
        * gfilterinputstream.c: add "close-base-stream" property and only
        close the base stream if it is true.  issue async close callbacks from
        correct source object.
        * gfilteroutputstream.h:
        * gfilteroutputstream.c: add a "close-base-stream" property and only
        close the base stream if it is true.  issue async close callbacks from
        correct source object.
        * gbufferedoutputstream: check g_filter_output_stream_get_close_base()
        before closing the base stream.  fix invalid source tag comparison in
        close_async (was comparing to flush_async).
        * ../docs/reference/gio/gio-sections.txt:
        * gio.symbols: add
        g_filter_{in,out}put_stream_{g,s}et_close_base_stream
        * tests/filter-streams.c: new test cases
        * tests/Makefile.am: add new test
        * tests/.gitignore: add new test


svn path=/trunk/; revision=7825