hg: jdk-updates/jdk11u-dev: 8211810: X11 Time stamp data should be unsigned

[christoph.langer at sap.com]

Changeset: 7dd0a5eaeb67
Author:    itakiguchi
Date:      2018-10-30 15:51 -0700
URL:       http://hg.openjdk.java.net/jdk-updates/jdk11u-dev/rev/7dd0a5eaeb67

8211810: X11 Time stamp data should be unsigned
Reviewed-by: serb

! src/java.desktop/unix/classes/sun/awt/X11/XDnDDropTargetProtocol.java
! src/java.desktop/unix/classes/sun/awt/X11/XMSelection.java