[gjs] add Tweener.setTimeScale and Tweener.getTimeScale

[James Willcox <jwillcox src gnome org>]

commit 214c84edeeae06257c5e57dd85ac55181c5ece29
Author: James Willcox <jwillcox litl com>
Date:   Fri May 14 17:12:34 2010 -0400

    add Tweener.setTimeScale and Tweener.getTimeScale
    
    This lets you effectively slow down (or speed up) all tweens. Pretty
    useful for debugging.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=618676

 modules/tweener/tweener.js |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/modules/tweener/tweener.js b/modules/tweener/tweener.js
index 959fa4d..d18408a 100644
--- a/modules/tweener/tweener.js
+++ b/modules/tweener/tweener.js
@@ -850,3 +850,11 @@ function registerSpecialPropertySplitter(name, splitFunction, parameters) {
         parameters: parameters
     };
 }
+
+function setTimeScale(scale) {
+    _timeScale = scale;
+}
+
+function getTimeScale() {
+    return _timeScale;
+}