Changed Camera.setViewPort(float,float,float,float) to not call onViewPortChage 4 times.

thanks to Lutherion http://jmonkeyengine.org/groups/development-discussion-jme3/forum/topic/possible-bug-with-viewport-on-camera/#post-124630

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@7235 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/core/com/jme3/renderer/Camera.java

@@ -207,7 +207,6 @@ public class Camera implements Savable, Cloneable {
     protected Matrix4f projectionMatrix = new Matrix4f();
     protected Matrix4f viewProjectionMatrix = new Matrix4f();
     private BoundingBox guiBounding = new BoundingBox();
-
     /** The camera's name. */
     protected String name;
 
@@ -913,10 +912,11 @@ public class Camera implements Savable, Cloneable {
      * @param top    the top boundary of the viewport (default: 1)
      */
     public void setViewPort(float left, float right, float bottom, float top) {
-        setViewPortLeft(left);
+        this.viewPortLeft = left;
-        setViewPortRight(right);
+        this.viewPortRight = right;
-        setViewPortBottom(bottom);
+        this.viewPortBottom = bottom;
-        setViewPortTop(top);
+        this.viewPortTop = top;
+        onViewPortChange();
     }
 
     /**