Merge topic 'cmp0153-suggestion' into release-3.28

d3cc815c98 CMP0153: Add suggestion to use execute_process()
8313d26198 cmState::AddDisallowedCommand(): Allow additional warning info

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Acked-by: Brad King <brad.king@kitware.com>
Merge-request: !8921