334937: support cancelling the entire task switch when user cancels
dirty editor save

Change-Id: I9d874250706d2e110b0a9cb07117a52e4d520b64
Task-Url: https://bugs.eclipse.org/bugs/show_bug.cgi?id=334937
Signed-off-by: chris.poon <chris.poon@tasktop.com>
22 files changed