Fix parameter type for IP_TOS setsockopt on non-Linux systems.

Fix parameter type for IP_TOS setsockopt on non-Linux systems.

Linux uses uint8_t, all BSD based stacks and Solaris use "int"  (Windows
documentation says "DWORD" and "do not use, use QoS API instead").

Bug reported and fix provided by Torsten Vielhak and Jeremie Le Hen.

Signed-off-by: Gert Doering <gert@greenie.muc.de>
Acked-by: David Sommerseth <davids@redhat.com>
Message-Id: 20121219212619.GN22465@greenie.muc.de
URL: http://article.gmane.org/gmane.network.openvpn.devel/7207
Signed-off-by: David Sommerseth <davids@redhat.com>
(cherry picked from commit d39f31d96378aa5eeade74670ffd9e08bf4c7234)