hg: jdk10/client/jdk: 7190581: Nimbus: PgDn at the bottom causes scrolling

[prasanta.sadhukhan at oracle.com]

Changeset: 88de64439af6
Author:    psadhukhan
Date:      2017-07-28 10:26 +0530
URL:       http://hg.openjdk.java.net/jdk10/client/jdk/rev/88de64439af6

7190581: Nimbus: PgDn at the bottom causes scrolling
Reviewed-by: ssadetsky

! src/java.desktop/share/classes/javax/swing/text/DefaultEditorKit.java
! test/javax/swing/JTextArea/4697612/bug4697612.java