Implement support for honoring configured and automatic hostnames, and for
	setting the configured hostname.

	* introspection/nm-ip4-config.xml
	  src/nm-ip4-config.c
	  src/nm-ip4-config.h
	  src/dhcp-manager/nm-dhcp-manager.c
		- Remove useless hostname property; it's not really part of the IPv4
			config

	* introspection/nm-settings-system.xml
	  libnm-glib/nm-dbus-settings-system.c
	  libnm-glib/nm-dbus-settings-system.h
		- Add SetHostname() call to system settings D-Bus interface
		- Add Hostname property to system settings D-Bus interface
		- (nm_dbus_settings_system_save_hostname,
		   nm_dbus_settings_system_get_hostname): implement

	* src/nm-device.c
	  src/nm-device.h
		- (nm_device_get_dhcp4_config): implement

	* src/nm-manager.c
	  src/nm-manager.h
		- Fetch and track system settings service hostname changes, and proxy
			the changes via a GObject property of the manager

	* system-settings/src/nm-system-config-interface.c
	  system-settings/src/nm-system-config-interface.h
		- Replace nm_system_config_interface_supports_add() with a capabilities
			bitfield

	* system-settings/src/nm-system-config-error.c
	  system-settings/src/nm-system-config-error.h
		- Add additional errors

	* system-settings/src/dbus-settings.c
	  system-settings/src/dbus-settings.h
		- (get_property, nm_sysconfig_settings_class_init): add hostname
			property; first plugin returning a hostname wins
		- (impl_settings_add_connection): use plugin capabilities instead of
			nm_system_config_interface_supports_add()
		- (impl_settings_save_hostname): implement hostname saving

	* src/NetworkManagerPolicy.c
		- (lookup_thread_run_cb, lookup_thread_worker, lookup_thread_new,
		   lookup_thread_die): implement an asynchronous hostname lookup thread
			which given an IPv4 address tries to look up the hostname for that
			address with reverse DNS
		- (get_best_device): split out best device code from
			update_routing_and_dns()
		- (update_etc_hosts): update /etc/hosts with the machine's new hostname
			to preserve the 127.0.0.1 reverse mapping that so many things require
		- (set_system_hostname): set a given hostname
		- (update_system_hostname): implement hostname policy; a configured
			hostname (from the system settings service) is used if available,
			otherwise an automatically determined hostname from DHCP, VPN, etc.
			If there was no automatically determined hostname, reverse DNS of
			the best device's IP address will be used, and as a last resort the
			hostname 'localhost.localdomain' is set.
		- (update_routing_and_dns): use get_best_device(); update the system
			hostname when the network config changes
		- (hostname_changed): update system hostname if the system settings
			service signals a hostname change
		- (nm_policy_new): list for system settings service hostname changes
		- (nm_policy_destroy): ensure that an in-progress hostname lookup thread
			gets told to die

	* system-settings/plugins/keyfile/plugin.c
	  system-settings/plugins/ifcfg-suse/plugin.c
		- (get_property, sc_plugin_ifcfg_class_init): implement hostname and
			capabilities properties

	* system-settings/plugins/ifcfg-fedora/shvar.c
		- (svOpenFile): re-enable R/W access of ifcfg files since the plugin
			writes out /etc/sysconfig/network now

	* system-settings/plugins/ifcfg-fedora/plugin.c
		- (plugin_get_hostname): get hostname from /etc/sysconfig/network
		- (plugin_set_hostname): save hostname to /etc/sysconfig/network
		- (sc_network_changed_cb): handle changes to /etc/sysconfig/network
		- (sc_plugin_ifcfg_init): monitor /etc/sysconfig/network for changes
		- (get_property, set_property, sc_plugin_ifcfg_class_init): implement
			hostname get/set and capabilities get



git-svn-id: http://svn-archive.gnome.org/svn/NetworkManager/trunk@4077 4912f4e0-d625-0410-9fb7-b9a5a253dbdc