* Call timer.reset() when gaining focus to fix "object speedup after alt-tab" issue

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@7264 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/lwjgl-ogl/com/jme3/system/lwjgl/LwjglAbstractDisplay.java

@@ -194,6 +194,7 @@ public abstract class LwjglAbstractDisplay extends LwjglContext implements Runna
                 if (wasActive != Display.isActive()) {
                     if (!wasActive) {
                         listener.gainFocus();
+                        timer.reset();
                         wasActive = true;
                     } else {
                         listener.loseFocus();