Bug 389380: Undo/Redo handling wrong Command executed by undo action

*A feature that did no changes is not added to the standard command
stack but to the additional steps command stack (for
ICustomUnduableFeatures)
* That causes the stacks to get out of sync and the wrong feature will
be undone for additional steps while the right one is undone for
standard changes

Change-Id: Ifcbdad99027324ec8866c601a23513ee587e24e8
3 files changed
tree: 433c627a79bd1b19632f4977f20795106eb84960
  1. examples/
  2. features/
  3. plugins/
  4. releng/
  5. tests/