Allow NetworkManager to create Bluetooth SDP sockets

It's going to do the the discovery for DUN service for modems with Bluez 5.
Module version bump for changes to the networkmanager modules by Lubomir Rintel
Drop RHEL4 and RHEL5 support.
On Debian iputils-arping is installed in /usr/bin/arping
Debian also ship a different arping implementation

In addition to the iputils arping implementation, Debian also ships an
other implementation which is installed under /usr/sbin/arping
Fix minor typo in init.if
Module version bump for Debian arping fc entries from Laurent Bigonville.
Merge upstream