Exact dependency is nearly >=qtwebkit-4.7, but i decided to add qt overlay - both for qtcurve-9999 ebuild and later - to try it with qt5.
However, above requirement is also satisfied by qtwebkit-5.2*, and currently 5.2.1 is preferred. More correct version should be qtwebkit:4. Not sure, how to write dependency on version begining from some, but of only one slot.
