hg: jdk10/client/jdk: 8132299: Shift + Mouse wheel ScrollPane horizontal scrolling doesn't work on Linux but works on Mac.

[semyon.sadetsky at oracle.com]

Changeset: c4822869431e
Author:    ssadetsky
Date:      2017-05-19 07:25 -0700
URL:       http://hg.openjdk.java.net/jdk10/client/jdk/rev/c4822869431e

8132299: Shift + Mouse wheel ScrollPane horizontal scrolling doesn't work on Linux but works on Mac.
Reviewed-by: arapte, azvegint

! src/java.desktop/unix/native/libawt_xawt/xawt/XWindow.c
! test/java/awt/Robot/ModifierRobotKey/ModifierRobotKeyTest.java