Replace some uses of .Sy with .Ar, .Ev and .Pa as appropriate.

From Jan Stary.

doc/sudo.cat

@@ -9,7 +9,7 @@ SSYYNNOOPPSSIISS
      ssuuddoo --ll [--AAkknnSS] [--aa _t_y_p_e] [--gg _g_r_o_u_p] [--hh _h_o_s_t] [--pp _p_r_o_m_p_t] [--UU _u_s_e_r]
           [--uu _u_s_e_r] [_c_o_m_m_a_n_d]
      ssuuddoo [--AAbbEEHHnnPPSS] [--aa _t_y_p_e] [--CC _n_u_m] [--cc _c_l_a_s_s] [--gg _g_r_o_u_p] [--hh _h_o_s_t]
-          [--pp _p_r_o_m_p_t] [--rr _r_o_l_e] [--tt _t_y_p_e] [--uu _u_s_e_r] [VVAARR=_v_a_l_u_e] [--ii | --ss]
+          [--pp _p_r_o_m_p_t] [--rr _r_o_l_e] [--tt _t_y_p_e] [--uu _u_s_e_r] [_V_A_R=_v_a_l_u_e] [--ii | --ss]
           [_c_o_m_m_a_n_d]
      ssuuddooeeddiitt [--AAkknnSS] [--aa _t_y_p_e] [--CC _n_u_m] [--cc _c_l_a_s_s] [--gg _g_r_o_u_p] [--hh _h_o_s_t]
               [--pp _p_r_o_m_p_t] [--uu _u_s_e_r] file ...
@@ -302,8 +302,8 @@ DDEESSCCRRIIPPTTIIOONN
                  command line arguments.
 
      Environment variables to be set for the command may also be passed on the
-     command line in the form of VVAARR=_v_a_l_u_e, e.g.
+     command line in the form of _V_A_R=_v_a_l_u_e, e.g.
-     LLDD__LLIIBBRRAARRYY__PPAATTHH=_/_u_s_r_/_l_o_c_a_l_/_p_k_g_/_l_i_b.  Variables passed on the command line
+     LD_LIBRARY_PATH=_/_u_s_r_/_l_o_c_a_l_/_p_k_g_/_l_i_b.  Variables passed on the command line
      are subject to restrictions imposed by the security policy plugin.  The
      _s_u_d_o_e_r_s policy subjects variables passed on the command line to the same
      restrictions as normal environment variables with one important
@@ -582,4 +582,4 @@ DDIISSCCLLAAIIMMEERR
      file distributed with ssuuddoo or http://www.sudo.ws/sudo/license.html for
      complete details.
 
-Sudo 1.8.9                     December 8, 2013                     Sudo 1.8.9
+Sudo 1.8.10                    December 8, 2013                    Sudo 1.8.10

doc/sudo.man.in

@@ -67,7 +67,7 @@
 [\fB\-r\fR\ \fIrole\fR]
 [\fB\-t\fR\ \fItype\fR]
 [\fB\-u\fR\ \fIuser\fR]
-[\fBVAR\fR=\fIvalue\fR]
+[\fIVAR\fR=\fIvalue\fR]
 [\fB\-i\fR\ |\ \fB\-s\fR]
 [\fIcommand\fR]
 .br
@@ -604,9 +604,9 @@ should stop processing command line arguments.
 .PP
 Environment variables to be set for the command may also be passed
 on the command line in the form of
-\fBVAR\fR=\fIvalue\fR,
+\fIVAR\fR=\fIvalue\fR,
 e.g.\&
-\fBLD_LIBRARY_PATH\fR=\fI/usr/local/pkg/lib\fR.
+\fRLD_LIBRARY_PATH\fR=\fI/usr/local/pkg/lib\fR.
 Variables passed on the command line are subject to restrictions
 imposed by the security policy plugin.
 The

doc/sudo.mdoc.in

@@ -99,7 +99,7 @@
 .Op Fl u Ar user
 .Ek
 .Bk -words
-.Op Sy VAR Ns = Ns Ar value
+.Op Ar VAR Ns = Ns Ar value
 .Ek
 .Bk -words
 .Op Fl i No | Fl s
@@ -604,9 +604,9 @@ should stop processing command line arguments.
 .Pp
 Environment variables to be set for the command may also be passed
 on the command line in the form of
-.Sy VAR Ns No = Ns Em value ,
+.Ar VAR Ns No = Ns Ar value ,
 e.g.\&
-.Sy LD_LIBRARY_PATH Ns No = Ns Em /usr/local/pkg/lib .
+.Ev LD_LIBRARY_PATH Ns No = Ns Pa /usr/local/pkg/lib .
 Variables passed on the command line are subject to restrictions
 imposed by the security policy plugin.
 The