Args.c: make autograb available via options file, too.

nx-X11/programs/Xserver/hw/nxagent/Args.c

@@ -1547,6 +1547,19 @@ static void nxagentParseSingleOption(char *name, char *value)
 
     return;
   }
+  else if (!strcmp(name, "autograb"))
+  {
+    if (!strcmp(value, "0"))
+    {
+      nxagentChangeOption(AutoGrab, False);
+    }
+    else
+    {
+      nxagentChangeOption(AutoGrab, True);
+    }
+
+    return;
+  }
   else
   {
     #ifdef DEBUG

nx-X11/programs/Xserver/hw/nxagent/man/nxagent.1

@@ -756,6 +756,10 @@ format must be included in both. This is potentially unsafe.
 means that all of these checks are essentially
 deactivated. This is a very bad idea.
 .RE
+.TP 8
+.B autograb=<int>
+enable or disable autograb (default: disabled)
+.RE
 
 If you want to use \fBnxagent\fR as a replacement for Xnest or Xephyr you
 can pass options like this: