Update to 1.164.

Overview of changes in Glib 1.164
=================================

* Allow Perl-derived GObjects to override GInterfaces that are implemented by
  parent classes.
* Load GInterface types immediately, instead of lazily.  This makes sure
  GInterfaces are set up by the time they are needed.

Overview of changes in Glib 1.163
=================================

* In our lazy-loading machinery for packages, change the way we clear @ISA
  arrays to avoid problems with perl 5.10.0.
* Fix a few build issues.

Overview of changes in Glib 1.162
=================================

* Fix a build failure in the documentation generation phase.
  [Andreas K旦nig]

Overview of changes in Glib 1.161
=================================

* Fix an assertion in Glib::Object::CLONE.
* Make Makefile.PL more friendly to CPAN testers.

Overview of changes in Glib 1.160
=================================

Since 1.14x (the previous stable series)
----------------------------------------
* Add Glib::get_user_special_dir.
* Add Glib::KeyFile::load_from_dirs.
* Add Glib::MainContext::is_owner.
* Add Glib::Timeout::add_seconds.
* Improve the automatic documentation generator.

Since 1.153
-----------
* Nothing.

Overview of changes in Glib 1.152
=================================

* Wrap g_main_context_is_owner.  [Torsten]
* Wrap g_timeout_add_seconds.  [Torsten]

Overview of changes in Glib 1.151
=================================

* Use BSD make syntax on BSD systems by default.  [Slaven Rezic, Torsten]
* Wrap g_key_file_load_from_dirs.  [Torsten]
* Wrap g_get_user_special_dir.  [Torsten]

Overview of changes in Glib 1.150
=================================

* Make it possible to mark objects and methods as deprecated with
  Glib::ParseXSDoc and Glib::GenPod.  [Emmanuele]

(xtraeme)