[vala] vapi: Update GIR-based bindings

[Rico Tzschichholz <ricotz src gnome org>]

commit 558bf7a336464145e17cba506998631de26ba37d
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Tue Oct 24 10:50:07 2017 +0200

    vapi: Update GIR-based bindings

 vapi/gio-2.0.vapi                   |    6 ++++--
 vapi/gobject-introspection-1.0.vapi |    1 +
 2 files changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/vapi/gio-2.0.vapi b/vapi/gio-2.0.vapi
index 60c1734..a9b9b1f 100644
--- a/vapi/gio-2.0.vapi
+++ b/vapi/gio-2.0.vapi
@@ -2445,10 +2445,12 @@ namespace GLib {
                public bool is_connected ();
                [Version (since = "2.32")]
                public bool join_multicast_group (GLib.InetAddress group, bool source_specific, string? 
iface) throws GLib.Error;
-               public bool join_multicast_group_ssm (GLib.InetAddress group, GLib.InetAddress 
source_specific, string iface) throws GLib.Error;
+               [Version (since = "2.56")]
+               public bool join_multicast_group_ssm (GLib.InetAddress group, GLib.InetAddress? 
source_specific, string? iface) throws GLib.Error;
                [Version (since = "2.32")]
                public bool leave_multicast_group (GLib.InetAddress group, bool source_specific, string? 
iface) throws GLib.Error;
-               public bool leave_multicast_group_ssm (GLib.InetAddress group, GLib.InetAddress 
source_specific, string iface) throws GLib.Error;
+               [Version (since = "2.56")]
+               public bool leave_multicast_group_ssm (GLib.InetAddress group, GLib.InetAddress? 
source_specific, string? iface) throws GLib.Error;
                public bool listen () throws GLib.Error;
                public ssize_t receive ([CCode (array_length_cname = "size", array_length_pos = 1.5, 
array_length_type = "gsize")] uint8[] buffer, GLib.Cancellable? cancellable = null) throws GLib.Error;
                public ssize_t receive_from (out GLib.SocketAddress address, [CCode (array_length_cname = 
"size", array_length_pos = 2.5, array_length_type = "gsize")] uint8[] buffer, GLib.Cancellable? cancellable = 
null) throws GLib.Error;
diff --git a/vapi/gobject-introspection-1.0.vapi b/vapi/gobject-introspection-1.0.vapi
index 768b004..a56deb0 100644
--- a/vapi/gobject-introspection-1.0.vapi
+++ b/vapi/gobject-introspection-1.0.vapi
@@ -191,6 +191,7 @@ namespace GI {
                [CCode (array_length = false, array_null_terminated = true)]
                public string[] get_loaded_namespaces ();
                public int get_n_infos (string namespace_);
+               public static GLib.OptionGroup get_option_group ();
                public static unowned GLib.SList<string> get_search_path ();
                public unowned string get_shared_library (string namespace_);
                public unowned string get_typelib_path (string namespace_);