Updating vpnc-script for openconnect and unbound

[Erinn Looney-Triggs]

I haven't been able to get a lot of traction with this, but I figured a
shot at this mailing list might help.

I have written a patch against the Fedora 18 version of vpnc-script to
allow it to detect that unbound is running and to set forwarders
appropriately for resolving internal IPs after a VPN connection is made.
That patch is attached.

This is very similar to work that was done on openswan here:
http://osdir.com/ml/fedora-devel-list/2012-06/msg02650.html

There is also a bug open for this here:
https://bugzilla.redhat.com/show_bug.cgi?id=865092

Feedback is more than welcome, oddest thing in the code is probably the
use of command, I chose that to be as portable as possible, other than
that it is all pretty self explanatory I think.

-Erinn
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