collectd: 4.10.8 version bump

collectd: 4.10.8 version bump

Collectd, the backbone for LuCI statistics, has been updated to 4.10.8 a few
weeks ago. I have already used it in my trunk build for some time.

Among other things 4.10.8 fixes a few memory leaks and a perl incompatibility
(see https://dev.openwrt.org/ticket/12494 ).

4.10.8 increases compatibility with current kernels and iproute2 reducing the
patch 130-fix_netlink_kernel_3.3-patch unnecessary. It can be removed.

I have also included a new patch 920-fix-ping-droprate.patch for fixing LuCI
ticket 462 (http://luci.subsignal.org/trac/ticket/462).

Signed-off-by: hannu.nyman@iki.fi
Signed-off-by: Florian Fainelli <florian@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/packages@34487 3c298f89-4303-0410-b956-a3cf2f4a3e73