[master] Pre-release tag prep for 4.4.2: version #, copyright etc...

[master] Pre-release tag prep for 4.4.2: version #, copyright etc...

 Changes to be committed:
	modified:   LICENSE
	modified:   README
	modified:   RELNOTES
	modified:   client/dhclient.c
	modified:   common/discover.c
	modified:   configure
	modified:   configure.ac
	modified:   configure.ac+lt
	modified:   configure.ac-base
	modified:   configure.ac-lt
	modified:   relay/dhcrelay.c
	modified:   relay/tests/relay_unittests.c
	modified:   server/dhcpd.c
	modified:   server/failover.c
	modified:   util/bind.sh