hg: openjfx/jfx-dev/rt: 8187074: [TabPane] Support reordering of Tabs within a TabPane

[ambarish.rapte at oracle.com]

Changeset: efbe2743f401
Author:    arapte
Date:      2017-12-09 00:42 +0530
URL:       http://hg.openjdk.java.net/openjfx/jfx-dev/rt/rev/efbe2743f401

8187074: [TabPane] Support reordering of Tabs within a TabPane
Reviewed-by: kcr, aghaisas

! apps/toys/Hello/src/main/java/hello/HelloTabPane.java
+ modules/javafx.controls/src/main/java/com/sun/javafx/scene/control/TabObservableList.java
! modules/javafx.controls/src/main/java/javafx/scene/control/TabPane.java
! modules/javafx.controls/src/main/java/javafx/scene/control/skin/TabPaneSkin.java
! modules/javafx.controls/src/test/java/test/javafx/scene/control/TabPaneTest.java
+ tests/system/src/test/java/test/robot/javafx/scene/TabPaneDragPolicyTest.java