* Upstream changes: <https://community.openvpn.net/openvpn/wiki/ChangesInOpenvpn23#OpenVPN2.3.12>
* The cmocka-based unit tests are currently disabled, too much hassle
and deps to get them running.
* Add patch-configure to drop the unit-test related warnings.
* Extend run control script to understand the "stats" argument, to send
SIGUSR2 to the process, contributed by Anton Yuzhaninov (with one
additional line fold).
* Drop patch-629baad8, no longer needed.
* Refresh other patches with make clean extract do-patch makepatch