[patches] incorporate fixes for olsrd dynamic gateway ping command patch

https://lists.olsr.org/pipermail/olsr-dev/2014-October/007431.html
Merge pull request #114 from freifunk-berlin/bug/olsrd_dyn_gw_patch_fixes

[patches] incorporate fixes for olsrd dynamic gateway ping command patch
[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