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

[Sebastian Krzyszkowiak]

Restricted Application edited projects, added Plasma; removed KWin.

REPOSITORY
  R108 KWin

BRANCH
  master

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

To: anemeth, #plasma, #kwin, fredrik
Cc: dos, luebking, broulik, romangg, zzag, anthonyfieroni, mart, 
davidedmundson, fredrik, ngraham, plasma-devel, kwin, #kwin, ZrenBot, 
progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol