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>
diff --git a/iptables-xml.8 b/iptables-xml.8
index 705dc5e..048c2cb 100644
--- a/iptables-xml.8
+++ b/iptables-xml.8
@@ -19,10 +19,9 @@
 .\"
 .\"
 .SH NAME
-iptables-xml \- Convert iptables-save format to XML
+iptables-xml \(em Convert iptables-save format to XML
 .SH SYNOPSIS
-.BR "iptables-xml " "[-c] [-v]"
-.br
+\fBiptables\-xml\fP [\fB\-c\fP] [\fB\-v\fP]
 .SH DESCRIPTION
 .PP
 .B iptables-xml
@@ -42,7 +41,7 @@
 
 .PP
 iptables-xml does a mechanistic conversion to a very expressive xml
-format; the only semantic considerations are for -g and -j targets in
+format; the only semantic considerations are for \-g and \-j targets in
 order to discriminate between <call> <goto> and <nane-of-target> as it
 helps xml processing scripts if they can tell the difference between a
 target like SNAT and another chain.
@@ -85,5 +84,4 @@
 .SH AUTHOR
 Sam Liddicott <azez@ufomechanic.net>
 .SH SEE ALSO
-.BR iptables-save "(8), " iptables-restore "(8), " iptables "(8) "
-.PP
+\fBiptables\-save\fP(8), \fBiptables\-restore\fP(8), \fBiptables\fP(8)