odhcp6c: Set default SOL_MAX_RT to 1h

git-svn-id: svn://svn.openwrt.org/openwrt@36411 3c298f89-4303-0410-b956-a3cf2f4a3e73
dnsmasq: update to 2.66
Thanks to Christoph König for patches.

git-svn-id: svn://svn.openwrt.org/openwrt@36412 3c298f89-4303-0410-b956-a3cf2f4a3e73