* info-daemon/NetworkManagerInfoDbus.c
		- Trap the "DeviceActivationFailed" signal

	* docs/NetworkManager DBUS API.txt
		- Add "DeviceActivationFailed" signal

	* panel-applet/NMWirelessAppletDbus.c
		- Quash the "NetworkManager service not available" message

	* src/NetworkManagerDbus.[ch]
		- Add the "DeviceActivationFailed" signal

	* src/NetworkManagerDevice.c
		- Add support for activation_failed flag
		- Fix deadlock where activation thread didn't clean itself up, making
			main thread still believe it was alive forever (didn't reset activation
			flags like activating, just_activated, etc when IP configuration
			failed)

	* src/NetworkManagerPolicy.c
		- Implement logic for DeviceActivationFailed signal, and when activation fails
			for wireless networks, try to fall back to some other access point


git-svn-id: http://svn-archive.gnome.org/svn/NetworkManager/trunk@268 4912f4e0-d625-0410-9fb7-b9a5a253dbdc