[feeds] update luci feed

fixes missing imports for gwcheck patch is upstream now therefor this
patch is not needed anymore see
github.com/openwrt/luci/commit/fb0edd219fc09c4f4b9eae894e67ce168d1de437
Merge pull request #127 from freifunk-berlin/features/update_luci_feed

[feeds] update luci feed
[feeds] update routing feed

* olsr 0.6.7
* batman-adv 2014.3.0
* batctl 2014.3.0
[patches] remove olsrd ipv6 bind only patch

this patch is not needed anymore because it's upstream
[patches] update olsrd dynamic gw ping cmd patch

'dyn gw plugin - add PingCmd parameter' is now upstream therefor we
take the version from git (see
http://olsr.org/git/?p=olsrd.git;a=commit;h=0a26c52af3941eb9060b193cae5552f8d13fd28e )
[feeds] update olsrd to 0.6.7.1
[feeds] update packages_berlin - olsrd-defaults

* add ipv6only for txtinfo and jsoninfo
* Use a separate hosts file for IPv6 olsrd nameservice