Fix manpage-check on RHEL 5.

The version of groff on RHEL 5 doesn't include the .SY, .OP, or .YS macros
that ovs-benchmark.1 uses, so the manpage-check target fails on that
platform.  This commit adds the groff definitions of those macros to a
file and includes it into ovs-benchmark.1.

I tested that this allows RHEL 5 to pass manpage-check.

1 files changed, 190 insertions, 0 deletions

diff --git a/lib/ovs.tmac b/lib/ovs.tmac
new file mode 100644
index 000000000..5f8f20afa
--- /dev/null
+++ b/lib/ovs.tmac
@@ -0,0 +1,190 @@
+.\" -*- nroff -*-
+.\" ovs.tmac
+.\"
+.\" Open vSwitch troff macro library
+.
+.
+.\" Continuation line for .IP.
+.de IQ
+.  br
+.  ns
+.  IP "\\$1"
+..
+.
+.\" Introduces a sub-subsection
+.de ST
+.  PP
+.  RS -0.15in
+.  I "\\$1"
+.  RE
+..
+.
+.\" The content between the lines below is from an-ext.tmac in groff
+.\" 1.21, with some modifications.
+.\" ----------------------------------------------------------------------
+.\" an-ext.tmac
+.\"
+.\" Written by Eric S. Raymond <esr@thyrsus.com>
+.\"            Werner Lemberg <wl@gnu.org>
+.\"
+.\" Version 2007-Feb-02
+.\"
+.\" Copyright (C) 2007, 2009, 2011 Free Software Foundation, Inc.
+.\" You may freely use, modify and/or distribute this file.
+.\"
+.\"
+.\" The code below provides extension macros for the `man' macro package.
+.\" Care has been taken to make the code portable; groff extensions are
+.\" properly hidden so that all troff implementations can use it without
+.\" changes.
+.\"
+.\" With groff, this file is sourced by the `man' macro package itself.
+.\" Man page authors who are concerned about portability might add the
+.\" used macros directly to the prologue of the man page(s).
+.
+.
+.\" Convention: Auxiliary macros and registers start with `m' followed
+.\"             by an uppercase letter or digit.
+.
+.
+.\" Declare start of command synopsis.  Sets up hanging indentation.
+.de SY
+.  ie !\\n(mS \{\
+.    nh
+.    nr mS 1
+.    nr mA \\n(.j
+.    ad l
+.    nr mI \\n(.i
+.  \}
+.  el \{\
+.    br
+.    ns
+.  \}
+.
+.  HP \w'\fB\\$1\fP\ 'u
+.  B "\\$1"
+..
+.
+.
+.\" End of command synopsis.  Restores adjustment.
+.de YS
+.  in \\n(mIu
+.  ad \\n(mA
+.  hy \\n(HY
+.  nr mS 0
+..
+.
+.
+.\" Declare optional option.
+.de OP
+.  ie \\n(.$-1 \
+.    RI "[\fB\\$1\fP" "\ \\$2" "]"
+.  el \
+.    RB "[" "\\$1" "]"
+..
+.
+.
+.\" Start URL.
+.de UR
+.  ds m1 \\$1\"
+.  nh
+.  if \\n(mH \{\
+.    \" Start diversion in a new environment.
+.    do ev URL-div
+.    do di URL-div
+.  \}
+..
+.
+.
+.\" End URL.
+.de UE
+.  ie \\n(mH \{\
+.    br
+.    di
+.    ev
+.
+.    \" Has there been one or more input lines for the link text?
+.    ie \\n(dn \{\
+.      do HTML-NS "<a href=""\\*(m1"">"
+.      \" Yes, strip off final newline of diversion and emit it.
+.      do chop URL-div
+.      do URL-div
+\c
+.      do HTML-NS </a>
+.    \}
+.    el \
+.      do HTML-NS "<a href=""\\*(m1"">\\*(m1</a>"
+\&\\$*\"
+.  \}
+.  el \
+\\*(la\\*(m1\\*(ra\\$*\"
+.
+.  hy \\n(HY
+..
+.
+.
+.\" Start email address.
+.de MT
+.  ds m1 \\$1\"
+.  nh
+.  if \\n(mH \{\
+.    \" Start diversion in a new environment.
+.    do ev URL-div
+.    do di URL-div
+.  \}
+..
+.
+.
+.\" End email address.
+.de ME
+.  ie \\n(mH \{\
+.    br
+.    di
+.    ev
+.
+.    \" Has there been one or more input lines for the link text?
+.    ie \\n(dn \{\
+.      do HTML-NS "<a href=""mailto:\\*(m1"">"
+.      \" Yes, strip off final newline of diversion and emit it.
+.      do chop URL-div
+.      do URL-div
+\c
+.      do HTML-NS </a>
+.    \}
+.    el \
+.      do HTML-NS "<a href=""mailto:\\*(m1"">\\*(m1</a>"
+\&\\$*\"
+.  \}
+.  el \
+\\*(la\\*(m1\\*(ra\\$*\"
+.
+.  hy \\n(HY
+..
+.
+.
+.\" Continuation line for .TP header.
+.de TQ
+.  br
+.  ns
+.  TP \\$1\" no doublequotes around argument!
+..
+.
+.
+.\" Start example.
+.de EX
+.  nr mE \\n(.f
+.  nf
+.  nh
+.  ft CW
+..
+.
+.
+.\" End example.
+.de EE
+.  ft \\n(mE
+.  fi
+.  hy \\n(HY
+..
+.
+.\" EOF
+.\" ----------------------------------------------------------------------