D29802: Require out-of-source builds

[Aleix Pol Gonzalez]

apol accepted this revision.

REPOSITORY
  R266 Breeze Icons

BRANCH
  require-in-source-build (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D29802

To: ngraham, #frameworks, #vdg, ognarb, davidre, apol
Cc: ltoscano, davidre, kde-frameworks-devel, LeGast00n, cblack, michaelh, ngraham, bruns
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