Update to release candidate #1.

Changes since test#13:
+ Move the dhcp_release and dhcp_lease_time tools from
+ contrib/wrt to contrib/lease-tools.
+
+ Add dhcp_release6 to contrib/lease-tools. Many thanks
+ to Sergey Nechaev for this code.
+
+ To avoid filling logs in configurations which define
+ many upstream nameservers, don't log more that 30 servers.
+ The number to be logged can be changed as SERVERS_LOGGED
+ in src/config.h.

Changelog since v2.75 at:
http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=blob_plain;f=CHANGELOG;hb=8628cd603fd0c55c7d41b84488446db44f58ff5b