olsrd: splitting IPv6/4 configuration and start scripts

As mentioned by zioproto[1] 6and4 is badly broken, this patch will
use 2 different configuration and init scripts.

[1] https://github.com/openwrt-routing/packages/issues/16#issuecomment-32892327
olsrd: configuration sanity checks

* do not start in presence of the old /etc/config/olsrd
* use always use the appropriate IpVersion.
olsrd: avoid fake startup-error messages

Calling service_check too early may result in a false reading
olsrd: hotplug script works for IPv4 and IPv6

This should fix issue #16
olsrd: bump version to 0.6.6.2, remove redundant patch
olsrd: Merge branch 'olsrd_6and4' by Alessio Caiazza.
Merge babeld configuration fix by zorun
olsrd: Added missing $IPKG_INSTROOT.
olsrd: do not remove the old config file if present
Merge pull request #34 from wlanslovenija/master

Fix broken olsrd init script activation
Merge pull request #35 from nolith/olsrd_conf_fix

Do not delete old olsrd configuration file
hnetd: bump and package LuCI pages
miniupnpd: disable detection / use of libnetfilter-conntrack
hnetd: bump for bugfixes
olsrd: backward compatibility (config and init script)
olsrd: increasing package release number to 4
hnetd: various bugfixes (incl. convergence failure fix)
hnetd: daily bugfix bump
minimalist-pcproxy: Fix typo in postinst
hnetd: add correct per-link FQDNs