fix manpage errors

fix manpage errors

Reviewed-by: Nicholas Bamber <nicholas@periapt.co.uk>
Forwarded: no
Last-Update: 2012-04-17

  a lot of minus sign occurences in the lsof man page are missing the
  '\' escape sign and would therefore be interpreted as hyphens. This patch
  adds the escape signs where appropriate.
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Gbp-Pq: Name manpage