[glibmm] Created tag 2.39.92

[Murray Cumming <murrayc src gnome org>]

The unsigned tag '2.39.92' was created.

Tagger: Murray Cumming <murrayc murrayc com>
Date: Tue Mar 18 10:03:21 2014 +0100

    2.39.92

Changes since the last tag '2.39.91':

Giuseppe Penone (1):
      win32: Surround content_type_get_symbolic_icon() with ifdefs.

Kjell Ahlstedt (1):
      Glib::ustring docs: Say more clearly that it must be only UTF-8

Murray Cumming (4):
      Add ActionMap to gio_extra_objects.defs.
      Application: Add add_main_option_entry() and add_option_group().
      Regenerate docs XML files.
      2.39.92