plugins, down-root: Code style clean-up

The coding style was somewhat chaotic.  Cleaning it up using the astyle
tool.  The style parameters are coherent to what was agreed upon at the
Munich Hackathon 2014 [1].

     astyle --style=allman --indent=spaces=4 -c

Also included a "Local variables" section which some editors may pick
up automatically.

Signed-off-by: David Sommerseth <davids@redhat.com>
Acked-by: Steffan Karger <steffan.karger@fox-it.com>
Message-Id: <1418078751-3614-1-git-send-email-openvpn.list@topphemmelig.net>
URL: http://article.gmane.org/gmane.network.openvpn.devel/9331
Signed-off-by: Gert Doering <gert@greenie.muc.de>