[8u-dev] Backport request: 8072676: [macosx] Jtree icon painted over label when scrollbars present in window

[Anton Nashatyrev]

Hello,

     please approve the fix backport from jdk9 to jdk8u-dev. The patch 
was applied without any modifications (with the exception of file paths).

Bug: https://bugs.openjdk.java.net/browse/JDK-8072676
Jdk9 Changeset: http://hg.openjdk.java.net/jdk9/client/jdk/rev/d768141965d7
Jdk9 Review Thread: 
http://mail.openjdk.java.net/pipermail/swing-dev/2015-February/004184.html

Thanks!
Anton.