D26318: Port endl to "\n" flush at the end + use const'ref in loop

[Laurent Montel]

mlaurent added a reviewer: dfaure.

REPOSITORY
  R266 Breeze Icons

REVISION DETAIL
  https://phabricator.kde.org/D26318

To: mlaurent, dfaure
Cc: kde-frameworks-devel, LeGast00n, GB_2, michaelh, ngraham, bruns