Add registration hooks for extension points. Register the gio extension

Add registration hooks for extension points. Register the gio extension

2008-01-28  Alexander Larsson  <alexl@redhat.com>

        * giomodule.[ch]:
        * gio.symbols:
	Add registration hooks for extension points.
	Register the gio extension points.

        * fam/gfamdirectorymonitor.c:
        * fam/gfamfilemonitor.c:
        * glocaldirectorymonitor.[ch]:
        * glocalfilemonitor.[ch]:
        * gnativevolumemonitor.h:
        * gunionvolumemonitor.c:
        * gunixvolumemonitor.c:
        * gvfs.[ch]:
        * gvolumemonitor.h:
        * inotify/ginotifydirectorymonitor.c:
        * inotify/ginotifyfilemonitor.c:
	Use the extension points registration instead
	of g_type_children().

svn path=/trunk/; revision=6399