bug 443490: Ability to distinguish between left-click and right-click on
table row is needed 
https://bugs.eclipse.org/bugs/show_bug.cgi?id=443490

Change-Id: Id422c433022aefdea564a07a18fabab7822600eb
Reviewed-on: https://git.eclipse.org/r/35124
Tested-by: Hudson CI
Reviewed-by: Andreas Hoegger <Andreas.Hoegger@bsiag.com>