2.45.50 (unstable):

Glib:
* RefPtr:
 * Add move constructor and move assignment operator for castable types.
   (Marcin Kolny) Bug 752812
 * Add release():
   (Marcin Kolny) Bug 752812
 * move assignment operator: Use swap().
   (Murray Cumming) Bug 752812

Gio:
* NetworkMonitor: Add get_network_metered() and property.
 (Murray Cumming)
* SocketService: Add active property.
 (Murray Cumming)

General:
* C++11: Boxed types: Declare move operations as noexcept.
 (Murray Cumming)

Build:
* Update Visual Studio project to Visual Studio 2013,
 for C++11 support.
 (Chun-wei Fan)
* Improve gen_scripts.
 (Kjell Ahlstedt)

gmmproc:
* generate_wrap_init.pl: Allow use of nested namespaces for whole module.
 (Marcin Kolny) Bug 753013