hg: openjfx/9-dev/rt: 8158006: Improve javadoc for abstract classes that application should not directly extend

[chien.yang at oracle.com]

Changeset: a4e104ec89b8
Author:    ckyang
Date:      2016-06-23 23:26 -0700
URL:       http://hg.openjdk.java.net/openjfx/9-dev/rt/rev/a4e104ec89b8

8158006: Improve javadoc for abstract classes that application should not directly extend
Reviewed-by: kcr

! modules/graphics/src/main/java/javafx/scene/Camera.java
! modules/graphics/src/main/java/javafx/scene/LightBase.java
! modules/graphics/src/main/java/javafx/scene/Node.java
! modules/graphics/src/main/java/javafx/scene/shape/Shape.java
! modules/graphics/src/main/java/javafx/scene/shape/Shape3D.java