D19508: [kconf_update] move from custom logging tech to qCDebug

[Aleix Pol Gonzalez]

apol added a reviewer: Frameworks.

REPOSITORY
  R237 KConfig

REVISION DETAIL
  https://phabricator.kde.org/D19508

To: sitter, apol, aacid, #frameworks
Cc: kde-frameworks-devel, michaelh, ngraham, bruns