D18954: Add missing XdgShellPopup::ackConfigure

[David Edmundson]

davidedmundson marked 3 inline comments as done.

REPOSITORY
  R127 KWayland

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D18954

To: davidedmundson, #kwin, zzag
Cc: zzag, kde-frameworks-devel, michaelh, ngraham, bruns