Add -Wfloat-equal flag generate some warnings

Hi,
If I add the following flag into my pro file:

QMAKE_CXXFLAGS += -Wfloat-equal

I get a number of warnings about float comparison with == in Qt code in following classes:

• QTransform
• QRectF
• QVector2D

Typical example:

Q_DECL_CONSTEXPR inline bool operator==(const QVector2D &v1, const QVector2D &v2)
{
    return v1.xp == v2.xp && v1.yp == v2.yp;
}

I think all these comparisons should use the QFuzzy functions.