hg: openjfx/8/controls/rt: RT-16206: Both Button and ButtonBase controls should have another constructor.

[hang.vo at oracle.com]

Changeset: 07846fb6acc2
Author:    Richard Bair <richard.bair at oracle.com>
Date:      2013-01-18 16:22 -0800
URL:       http://hg.openjdk.java.net/openjfx/8/controls/rt/rev/07846fb6acc2

RT-16206: Both Button and ButtonBase controls should have another constructor.
Summary: Add constructor to support convenience creation of a Button with only a Graphic.

! javafx-ui-controls/src/javafx/scene/control/Button.java
! javafx-ui-controls/src/javafx/scene/control/ButtonBase.java
! javafx-ui-controls/src/javafx/scene/control/Labeled.java