manpages: more fixes to minuses, hyphens, dashes

Debian still carries patches patches to the iptables nroff code touching
ASCII minuses, so I thought, what's it this time.

Eventually, this patch tries to straighten things once more, per
http://en.wikipedia.org/wiki/Wikipedia:Manual_of_Style#Hyphens and
http://en.wikipedia.org/wiki/Wikipedia:Manual_of_Style#Dashes .

Titles will get the em dash; all typed commands or parameters with a
hyphen get a minus (so that man(1) hyperlinking and copy-pasting does
work), but other mentions get the hyphen.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
16 files changed