Fix bug where PRIORITY_NON_SYSTEM is NaN. Moved the constant into the cc.Scheduler namespace for consistency with PRIORITY_SYSTEM.

Author: ronyeh

Diff for: cocos2d/core/CCScheduler.js

@@ -25,12 +25,6 @@
  ****************************************************************************/
 
 
-/**
- * Minimum priority level for user scheduling.
- * @constant
- * @type Number
- */
-cc.PRIORITY_NON_SYSTEM = cc.PRIORITY_SYSTEM + 1;
 
 //data structures
 /**
@@ -1029,9 +1023,17 @@ cc.Scheduler = cc.Class.extend(/** @lends cc.Scheduler# */{
         this.unscheduleAllWithMinPriority(minPriority);
     }
 });
+
 /**
  * Priority level reserved for system services.
  * @constant
  * @type Number
  */
 cc.Scheduler.PRIORITY_SYSTEM = (-2147483647 - 1);
+
+/**
+ * Minimum priority level for user scheduling.
+ * @constant
+ * @type Number
+ */
+cc.Scheduler.PRIORITY_NON_SYSTEM = cc.Scheduler.PRIORITY_SYSTEM + 1;