Bug 579067 - DataTree toString implementations for debug

Change-Id: I8ad33daa9f69e1c9d9d5ca83e9797601a60418b8
Signed-off-by: Joerg Kubitz <jkubitz-eclipse@gmx.de>
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.resources/+/190589
Tested-by: Platform Bot <platform-bot@eclipse.org>
Reviewed-by: Mickael Istria <mistria@redhat.com>
8 files changed