D26236: Port QRegExp to QRegularExpression (and some QStringRef optimisation)

[Ahmad Samir]

ahmadsamir added a task: T12279: Port frameworks away from QRegExp.

REPOSITORY
  R241 KIO

REVISION DETAIL
  https://phabricator.kde.org/D26236

To: ahmadsamir, #frameworks, dfaure, apol
Cc: kde-frameworks-devel, LeGast00n, GB_2, michaelh, ngraham, bruns