Expose whether a mouse is an absolute device via QMP and the human monitor.

For QMP, we just add an attribute which is backwards compatible.  For the human
monitor, we add (absolute) to the end of the line.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

input.c

@@ -195,9 +195,10 @@ static void info_mice_iter(QObject *data, void *opaque)
     Monitor *mon = opaque;
 
     mouse = qobject_to_qdict(data);
-    monitor_printf(mon, "%c Mouse #%" PRId64 ": %s\n",
+    monitor_printf(mon, "%c Mouse #%" PRId64 ": %s%s\n",
                   (qdict_get_bool(mouse, "current") ? '*' : ' '),
-                  qdict_get_int(mouse, "index"), qdict_get_str(mouse, "name"));
+                   qdict_get_int(mouse, "index"), qdict_get_str(mouse, "name"),
+                   qdict_get_bool(mouse, "absolute") ? " (absolute)" : "");
 }
 
 void do_info_mice_print(Monitor *mon, const QObject *data)
@@ -224,11 +225,12 @@ void do_info_mice_print(Monitor *mon, const QObject *data)
  * - "name": mouse's name
  * - "index": mouse's index
  * - "current": true if this mouse is receiving events, false otherwise
+ * - "absolute": true if the mouse generates absolute input events
  *
  * Example:
  *
- * [ { "name": "QEMU Microsoft Mouse", "index": 0, "current": false },
- *   { "name": "QEMU PS/2 Mouse", "index": 1, "current": true } ]
+ * [ { "name": "QEMU Microsoft Mouse", "index": 0, "current": false, "absolute": false },
+ *   { "name": "QEMU PS/2 Mouse", "index": 1, "current": true, "absolute": true } ]
  */
 void do_info_mice(Monitor *mon, QObject **ret_data)
 {
@@ -246,10 +248,14 @@ void do_info_mice(Monitor *mon, QObject **ret_data)
 
     QTAILQ_FOREACH(cursor, &mouse_handlers, node) {
         QObject *obj;
-        obj = qobject_from_jsonf("{ 'name': %s, 'index': %d, 'current': %i }",
+        obj = qobject_from_jsonf("{ 'name': %s,"
+                                 "  'index': %d,"
+                                 "  'current': %i,"
+                                 "  'absolute': %i }",
                                  cursor->qemu_put_mouse_event_name,
                                  cursor->index,
-                                 cursor->index == current);
+                                 cursor->index == current,
+                                 !!cursor->qemu_put_mouse_event_absolute);
         qlist_append_obj(mice_list, obj);
     }