Summary:
Some of the documentation did not say what the purpose of the
respective class was, but rather gave a tautology.
For people new to the code base it helps to mention that
DPMS is power management.
That DataDevice is for copy-and-paste and drag-and-drop is
maybe obvious to people used to X11 API, but not very clear
to most others.
When first reading the KWayland code, some explanations
help getting around.
Reviewers: #kwin, romangg
Reviewed By: #kwin, romangg
Subscribers: romangg, zzag, kde-frameworks-devel
Tags: #frameworks
Differential Revision: https://phabricator.kde.org/D23915
Adding support for a org_kde_kwin_dpms interface. On server side
Dpms is mostly bound to the OutputInterface exposing just a very
small manager. Whether Dpms is supported and which mode is used is
tracked directly on the OutputInterface.
