Fixed #2433: Fix ArmatureAnimation's setMovementEventCallFunc and setFrameEventCallFunc

[pandamicro]

No description provided.

[pandamicro]

Tested with manually modified code in CocoStudioTest/ArmatureTest/TestFrameEvent on Mac / Chrome

Modified code :

var TestFrameEvent = ArmatureTestLayer.extend({
    _nodeGrid: null,
    onEnter: function () {
        ...
        var self = this;
        armature.getAnimation().setFrameEventCallFunc(function(bone, evt, originFrameIndex, currentFrameIndex) {
            self.onFrameEvent(bone, evt, originFrameIndex, currentFrameIndex);
        });
        ...