Remove OpenSUSE bug report link, set version to @VERSION@, make it build with
CentOS 8 etc.
Related: OS#4550
Change-Id: I5376fde96c7442eb70f49a2ce38f57a817a94f81
This patch adds the libgtpnl library. Harald mentioned that he wanted
that the specific code that is added is well encapsulated, so let's
start a small library to interact with the GTP kernel module via netlink
interface.
This was done a bit while in the rush, so the interfaces are not nice
at all and the tools need to be ported on top of this library.
This library will be used to integrate openggsn with the GTP kernel
module.