the name of the method kind of makes sense for something thats relative.
Otherwise it would be setRotation().
But this makes the other transformation methods a bit weird since they
too look relative. And now we can't say anymore that everything is absolute.
So, rename the KoShape::scale and KoShape::shear() and KoShape::resize() to
setScale(), setShear() and setSize()

svn path=/trunk/koffice/; revision=690296