Radvd has been updated to 1.9.1 in June. There are some changes related to
IPv6 functionality, but additionally the change concerns scrapping the
built-in daemonization code and starting to use libdaemon for that.
This patch updates radvd to 1.9.1 and adds the dependency for libdaemon.
Signed-off-by: hannu.nyman@iki.fi
git-svn-id: svn://svn.openwrt.org/openwrt/packages@32827 3c298f89-4303-0410-b956-a3cf2f4a3e73