D9848: Updated the blur method to use the more efficient dual kawase blur algorithm.

[Nathaniel Graham]

Restricted Application edited projects, added Plasma; removed KWin.

REPOSITORY
  R108 KWin

REVISION DETAIL
  https://phabricator.kde.org/D9848

To: anemeth, #plasma, #kwin, graesslin
Cc: ngraham, plasma-devel, kwin, #kwin, ZrenBot, progwolff, lesliezhai, 
ali-mohamed, jensreuterberg, abetts, sebas, apol, mart