2.27.91.1 (unstable):

* gmmproc:
 - _WRAP_CTOR(): Restore the optional extra parameter, because it
 is still needed by gtkmm-2.4.
 (Murray Cumming)
 - Added conversion from bool& to gboolean*.
 (Chris Kühl)

* DBus::[watch|own]_name(): Add default values for parameters.
* DBusConnection:
 - Add a send_message() without an "out_serial" parameter.
 - Avoid errors/exceptions in callbacks due to NULL C strings.
 - Wrap properties and signals.
* DBusMessage: Wrap properties and signals.
* DBusServer: Comment out constructors because of bug #639478.
* InetAddress: Wrap properties.
* Variant: Make the variant_type() functions return actual types.
* Documentation: Started a client/server example that uses the user's bus.

 DBus: Add initial implementation of a bus server/client example.

       * examples/Makefile.am:
       * examples/dbus/busserver.cc: Add a partial implementation of the
       server part of a server/client example that communicate through the
       user's bus.
       * examples/dbus/peer.cc: Typos.