This patch enables experimental QML support in Qt5.
Only the QtQuick plugin is available yet.
Currently runs best on Linux and has some problems on NOVA and Fiasco.OC.
Fixes#979.
One of the Qt5 patches is supposed to create symbolic links, which is not
supported by GNU patch before version 2.7. Using 'git apply' to apply the
patches solves this problem.
Fixes#969.