webui: fixed typo on IPV6 page preventing the Apply button from working
webui: Fixed typo in JS code
snmpd: libnmp is only compatible with SDK6, but additionally should only be enabled if SNMPD is also enabled.  Check for that in the router Makefile
webui: switch to the new cookie handler on the performance tuning graph (fixes missing scales)
mt-daapd: merge change missed from a recent GPL update
resynchronized SDK6-470x environment with GPL (a few files weren't up-to-date)
dpi: ignore root level files that get copied during build
Bumped revision to 376.49 alpha 4
kernel-arm: Backported XHCI code from Netgear, which seems to be a backport from a newer 3.x Linux kernel
kernel-arm: these empty files get deleted during build/clean, so no point in keeping them on the repo