6relayd: Various DHCPv6-fixes
* Be more standards-compliant in stateful mode
* Handle hostnames from Windows-clients correctly
* Handle messages from DHCPv6-relays better

git-svn-id: svn://svn.openwrt.org/openwrt@36677 3c298f89-4303-0410-b956-a3cf2f4a3e73
odhcp6c: Various fixes
* Honour T1 and T2 values from servers better
* Correctly send Reconfigure-Accept option in requests

git-svn-id: svn://svn.openwrt.org/openwrt@36678 3c298f89-4303-0410-b956-a3cf2f4a3e73
ar71xx: disable jffs2 by default, it confuses users since many devices have incompatible eraseblock sizes

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt@36679 3c298f89-4303-0410-b956-a3cf2f4a3e73