Add network address and socket types

Types and methods for dealing with IPv4 and IPv6 addresses (and UNIX
domain socket addresses under UNIX). This does not include code for
actual socket I/O.

Originally from "gnio". Much of the code was written by Christian
Kellner, Samuel Cormier-Iijima, and Ryan Lortie.

Part of #548466.

docs/reference/gio/gio-docs.xml

@@ -90,6 +90,13 @@
     	<xi:include href="xml/gemblemedicon.xml"/>
     	<xi:include href="xml/gemblem.xml"/>
     </chapter>
+    <chapter id="networking">
+    	<title>Networking</title>
+        <xi:include href="xml/ginetaddress.xml"/>
+        <xi:include href="xml/gsocketaddress.xml"/>
+        <xi:include href="xml/ginetsocketaddress.xml"/>
+        <xi:include href="xml/gunixsocketaddress.xml"/>
+    </chapter>
     <chapter id="utils">   
     	<title>Utilities</title>
         <xi:include href="xml/gfilenamecompleter.xml"/>

docs/reference/gio/gio-sections.txt

@@ -1312,4 +1312,95 @@ g_io_extension_point_set_required_type
 g_io_extension_ref_class
 </SECTION>
 
+<SECTION>
+<FILE>ginetaddress</FILE>
+<TITLE>GInetAddress</TITLE>
+GInetAddress
+g_inet_address_new_from_string
+g_inet_address_new_from_bytes
+g_inet_address_new_any
+g_inet_address_new_loopback
+g_inet_address_to_bytes
+g_inet_address_to_string
+g_inet_address_get_family
+g_inet_address_get_is_any
+g_inet_address_get_is_link_local
+g_inet_address_get_is_loopback
+g_inet_address_get_is_mc_global
+g_inet_address_get_is_mc_link_local
+g_inet_address_get_is_mc_node_local
+g_inet_address_get_is_mc_org_local
+g_inet_address_get_is_mc_site_local
+g_inet_address_get_is_multicast
+g_inet_address_get_is_site_local
+<SUBSECTION Standard>
+GInetAddressClass
+GInetAddressPrivate
+G_INET_ADDRESS
+G_INET_ADDRESS_CLASS
+G_INET_ADDRESS_GET_CLASS
+G_IS_INET_ADDRESS
+G_IS_INET_ADDRESS_CLASS
+G_TYPE_INET_ADDRESS
+<SUBSECTION Private>
+g_inet_address_get_type
+</SECTION>
 
+<SECTION>
+<FILE>gsocketaddress</FILE>
+<TITLE>GSocketAddress</TITLE>
+GSocketAddress
+GSocketFamily
+g_socket_address_new_from_native
+g_socket_address_get_family
+g_socket_address_to_native
+g_socket_address_get_native_size
+<SUBSECTION Standard>
+GSocketAddressClass
+G_IS_SOCKET_ADDRESS
+G_IS_SOCKET_ADDRESS_CLASS
+G_SOCKET_ADDRESS
+G_SOCKET_ADDRESS_CLASS
+G_SOCKET_ADDRESS_GET_CLASS
+G_TYPE_SOCKET_ADDRESS
+<SUBSECTION Private>
+g_socket_address_get_type
+</SECTION>
+
+<SECTION>
+<FILE>ginetsocketaddress</FILE>
+<TITLE>GInetSocketAddress</TITLE>
+GInetSocketAddress
+g_inet_socket_address_new
+g_inet_socket_address_get_address
+g_inet_socket_address_get_port
+<SUBSECTION Standard>
+GInetSocketAddressClass
+GInetSocketAddressPrivate
+G_INET_SOCKET_ADDRESS
+G_INET_SOCKET_ADDRESS_CLASS
+G_INET_SOCKET_ADDRESS_GET_CLASS
+G_IS_INET_SOCKET_ADDRESS
+G_IS_INET_SOCKET_ADDRESS_CLASS
+G_TYPE_INET_SOCKET_ADDRESS
+<SUBSECTION Private>
+g_inet_socket_address_get_type
+</SECTION>
+
+<SECTION>
+<FILE>gunixsocketaddress</FILE>
+<TITLE>GUnixSocketAddress</TITLE>
+GUnixSocketAddress
+g_unix_socket_address_new
+<SUBSECTION Standard>
+GUnixSocketAddressClass
+GUnixSocketAddressPrivate
+G_IS_UNIX_SOCKET_ADDRESS
+G_IS_UNIX_SOCKET_ADDRESS_CLASS
+G_TYPE_UNIX_SOCKET_ADDRESS
+G_UNIX_SOCKET_ADDRESS
+G_UNIX_SOCKET_ADDRESS_CLASS
+G_UNIX_SOCKET_ADDRESS_GET_CLASS
+<SUBSECTION Private>
+g_unix_socket_address_get_type
+</SECTION>

docs/reference/gio/gio.types

@@ -36,6 +36,8 @@ g_file_type_get_type
 g_filter_input_stream_get_type
 g_filter_output_stream_get_type
 g_icon_get_type
+g_inet_address_get_type
+g_inet_socket_address_get_type
 g_input_stream_get_type
 g_io_error_enum_get_type
 g_io_module_get_type
@@ -55,10 +57,12 @@ g_output_stream_splice_flags_get_type
 g_password_save_get_type
 g_seekable_get_type
 g_simple_async_result_get_type
+g_socket_address_get_type
 g_themed_icon_get_type
 g_unix_input_stream_get_type
 g_unix_mount_monitor_get_type
 g_unix_output_stream_get_type
+g_unix_socket_address_get_type
 g_vfs_get_type
 g_volume_get_type
 g_volume_monitor_get_type