[packages] proftpd: update to 1.3.4c

git-svn-id: svn://svn.openwrt.org/openwrt@36093 3c298f89-4303-0410-b956-a3cf2f4a3e73
odhcp6c: Fix metric for on-link prefix routes

git-svn-id: svn://svn.openwrt.org/openwrt@36094 3c298f89-4303-0410-b956-a3cf2f4a3e73