[7u] Review request for 7068740: If you wrap a JTable in a JLayer you can't use the page up and page down cmds

[Vladislav Karnaukhov]

Hello,

could you please review a request for a backport into jdk7? The fix is 
identical to that in jdk8.

webrev: http://cr.openjdk.java.net/~vkarnauk/7068740/jdk7/webrev.00/
jdk8 changeset: http://hg.openjdk.java.net/jdk8/awt/jdk/rev/a4356b90f57d

Regards,
- Vlad