Introduces 5.3 QML APIs.

Existing 5.2 QML APIs automatically become available
under 5.3 import tags too

Change-Id: I5101c63eaaa00a124475bbc7f60fda0eecfde6ec
Reviewed-by: Erik Mattsson <erik.mattsson@appello.com>
Reviewed-by: Anders Gunnarsson <anders.gunnarsson@appello.com>
Reviewed-by: Aaron McCarthy <mccarthy.aaron@gmail.com>
Update Qt Creator QML meta data following recent version changes

Change-Id: I6331a0cde85dd3c4ba69e4f67db53e67aa696db1
Reviewed-by: Erik Mattsson <erik.mattsson@appello.com>
Reviewed-by: Anders Gunnarsson <anders.gunnarsson@appello.com>
Reviewed-by: Aaron McCarthy <mccarthy.aaron@gmail.com>