[Differential] [Updated] D3822: use a native event filter to notice the screen was swapped

[mart (Marco Martin)]

mart added reviewers: davidedmundson, sebas.

REPOSITORY
  R120 Plasma Workspace

REVISION DETAIL
  https://phabricator.kde.org/D3822

EMAIL PREFERENCES
  https://phabricator.kde.org/settings/panel/emailpreferences/

To: mart, #plasma, davidedmundson, sebas
Cc: plasma-devel, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas