...and fix up the docs.
The string-based setSceneGraphBackend() stays of course (the docs have
been enhanced, however). The GraphicsApi enum-based overload is now
renamed to setGraphicsApi().
Using the same name for both functions is a historical artifact, reflecting
the evolution (5.0 - 5.8 - 5.14). In 6.0 we can give it a more appropriate
name, since it does not have much to do with "backends" from the user's
perspective.
Change-Id: Id75dbf81f50a148797e5b5de9be4000153737473
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
Laszlo Agocs
Ulf Hermann