Properly escape dashes on the man-page

Properly escape dashes on the man-page

On UTF-8 systems groff interprets unescaped dashes as hyphens and escaped
dashes
as minus signs. Unescaped dashes can cause problems when searching for or
copying and pasting options. This patch ensures that dashes in command-line
options are escaped and that everything else is left unescaped. This patch
is
for the Git "master" branch.

Trac: 512
Signed-off-by: Samuli Seppänen <samuli@openvpn.net>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <1431339554-20553-1-git-send-email-samuli@openvpn.net>
URL: http://article.gmane.org/gmane.network.openvpn.devel/9674
Signed-off-by: Gert Doering <gert@greenie.muc.de>