Use QT_VERSION_CHECK instead of hex version number.
Use QT_VERSION_CHECK instead of hex version number.

RevBy: Jan Arne Petersen

Full, original commit at 570cd91eda2eee9fe91c30e1dc5cdf66e9d2b02b in maliit-framework

maliit/inputcontext-qt4,perencia/inputcontext-qt4,maliit/inputcontext-qt4