fix some memory leaks. patch partially by John Daiker.

2007-11-25  James Livingston  <doclivingston@gmail.com>

        * bindings/python/rb.defs:
        * metadata/rb-metadata-dbus-service.c: (main):
        * plugins/rb-plugins-engine.c: (rb_plugins_engine_load),
        (rb_plugins_engine_load_cb):
        * plugins/sample-vala/rb-sample-vala-plugin.vala:
        * plugins/visualizer/rb-visualizer-plugin.c: (get_vis_plugin_list):
        * shell/rb-shell.c: (rb_shell_finalize), (construct_widgets):
        * shell/rb-tray-icon.c: (rb_tray_icon_init):
        * tools/massif.sh:
        * widgets/rb-entry-view.c: (rb_entry_view_get_sorting_type):
        * widgets/rb-entry-view.h: fix some memory leaks. patch partially by
        John Daiker.

svn path=/trunk/; revision=5456