Allow relative positions to use output names or monitor identifiers.

Previous version used monitor identifiers if present, otherwise output
names. That caused existing working configurations to break when additional
information was added to the configuration file.

hw/xfree86/modes/xf86Crtc.c

@@ -879,13 +879,17 @@ xf86InitialOutputPositions (ScrnInfoPtr scrn, DisplayModePtr *modes)
 		{
 		    xf86OutputPtr	out_rel = config->output[or];
 		    XF86ConfMonitorPtr	rel_mon = out_rel->conf_monitor;
-		    char		*name;
 
 		    if (rel_mon)
-			name = rel_mon->mon_identifier;
-		    else
-			name = out_rel->name;
-		    if (!strcmp (relative_name, name))
+		    {
+			if (xf86nameCompare (rel_mon->mon_identifier,
+					      relative_name) == 0)
+			{
+			    relative = config->output[or];
+			    break;
+			}
+		    }
+		    if (strcmp (out_rel->name, relative_name) == 0)
 		    {
 			relative = config->output[or];
 			break;