Changed formatting of manpage cross references to use .Xr macro.

Changed all libcompat manpages so that they clearly state that the
documented interface is availiable from libcompat.
(Fixes PR #703)

lib/libcompat/4.1/ftime.3

@@ -44,8 +44,8 @@
 .Fn ftime "struct timeb *tp"
 .Sh DESCRIPTION
 .Bf -symbolic
-This interface is obsoleted by gettimeofday(2).
-.Pp
+This interface is obsoleted by 
+.Xr gettimeofday 2 .
 It is available from the compatibility library, libcompat.
 .Ef
 .Pp

lib/libcompat/4.1/getpw.3

@@ -41,8 +41,8 @@
 .Fn getpw uid "char *buf"
 .Sh DESCRIPTION
 .Bf -symbolic
-The getpw function is made obsolete by getpwuid(3).
-.br
+The getpw function is made obsolete by 
+.Xr getpwuid 3 .
 It is available from the compatibility library, libcompat.
 .Ef
 .Pp

lib/libcompat/4.1/stty.3

@@ -44,7 +44,8 @@
 .Fn gtty "int fd" "struct sgttyb *buf"
 .Sh DESCRIPTION
 .Bf -symbolic
-These interfaces are obsoleted by ioctl(2).
+These interfaces are obsoleted by 
+.Xr ioctl 2 .
 They are available from the compatibility library, libcompat.
 .Ef
 .Pp

lib/libcompat/4.1/vlimit.3

@@ -42,7 +42,8 @@
 .Fn vlimit resource value
 .Sh DESCRIPTION
 .Bf -symbolic
-This interface is obsoleted by getrlimit(2).
+This interface is obsoleted by
+.Xr getrlimit 2 .
 It is available from the compatibility library, libcompat.
 .Ef
 .Pp

lib/libcompat/4.1/vtimes.3

@@ -42,7 +42,8 @@
 .Fn vtimes "struct vtimes *par_vm" "struct vtimes *ch_vm"
 .Sh DESCRIPTION
 .Bf -symbolic
-This interface is obsoleted by getrusage(2).
+This interface is obsoleted by 
+.Xr getrusage 2 .
 It is available from the compatibility library, libcompat.
 .Ef
 .Pp

lib/libcompat/4.3/insque.3

@@ -24,7 +24,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.\"	$Id: insque.3,v 1.3 1994/03/12 01:28:56 jtc Exp $
+.\"	$Id: insque.3,v 1.4 1995/01/13 01:16:12 jtc Exp $
 .\"
 .Dd August 12, 1993
 .Dt INSQUE 3
@@ -50,6 +50,10 @@
 .Ft void
 .Fn remque "struct qelem *elem"
 .Sh DESCRIPTION
+.Bf -symbolic
+These interfaces are available from the compatibility library, libcompat.
+.Ef
+.Pp
 .Fn insque
 and
 .Fn remque

lib/libcompat/4.3/lsearch.3

@@ -45,8 +45,8 @@
 .Fn lfind "const void *key" "const void *base" "size_t *nelp" "size_t width" "int (*compar)(void *, void *)"
 .Sh DESCRIPTION
 .Bf -symbolic
-This interface was obsolete before it was written.
-It is available from the compatibility library, libcompat.
+These interfaces were obsolete before they were written.
+They are available from the compatibility library, libcompat.
 .Ef
 .Pp
 The functions

lib/libcompat/4.3/re_comp.3

@@ -45,8 +45,11 @@
 .Ft int
 .Fn re_exec "const char *s"
 .Sh DESCRIPTION
+.Bf -symbolic
 This interface is made obsolete by
 .Xr regex 3 .
+It is available from the compatibility library, libcompat.
+.Ef
 .Pp
 The
 .Fn re_comp

lib/libcompat/4.3/rexec.3

@@ -42,7 +42,8 @@
 .Fn rexec ahost "int inport" "char *user" "char *passwd" "char *cmd" "int *fd2p"
 .Sh DESCRIPTION
 .Bf -symbolic
-This interface is obsoleted by krcmd(3).
+This interface is obsoleted by 
+.Xr krcmd 3 .
 It is available from the compatibility library, libcompat.
 .Ef
 .Pp

lib/libcompat/4.4/cuserid.3

@@ -30,7 +30,7 @@
 .\" SUCH DAMAGE.
 .\"
 .\"     from: @(#)ctermid.3	5.2 (Berkeley) 4/19/91
-.\"	$Id: cuserid.3,v 1.1 1994/05/19 06:20:26 jtc Exp $
+.\"	$Id: cuserid.3,v 1.2 1995/01/13 01:16:19 jtc Exp $
 .\"
 .Dd November 28, 1993
 .Dt CUSERID 3
@@ -43,6 +43,10 @@
 .Ft char *
 .Fn cuserid "char *buf"
 .Sh DESCRIPTION
+.Bf -symbolic
+This interface is available from the compatibility library, libcompat.
+.Ef
+.Pp
 The
 .Fn cuserid
 function returns a character string representation of the user name 

lib/libcompat/regexp/regexp.3

@@ -49,8 +49,11 @@
 .Ft void
 .Fn regsub "const regexp *prog" "const char *source" "char *dest"
 .Sh DESCRIPTION
+.Bf -symbolic
 This interface is made obsolete by
 .Xr regex 3 .
+It is available from the compatibility library, libcompat.
+.Ef
 .Pp
 The
 .Fn regcomp ,