Patch from Tom Parker
	* Add autoip/Link Local Addressing support when we fail to get a DHCP
		address

	* Longer pause after setting ESSID on cards that support a larger number
		of channels to give the card time to find the right channel

	* Add system hook to restart mDNSResponder (or whatever the local implementation
		of Multicast DNS is) when we activate interfaces


git-svn-id: http://svn-archive.gnome.org/svn/NetworkManager/trunk@341 4912f4e0-d625-0410-9fb7-b9a5a253dbdc