Additionally, fixes some revisioning errors which a manual inspection
of the qmltypes files diffs revealed.

-mipmapChanged signal is new
-windowTitleChanged signal is new
-Matrix4x4 made 5.3, but was revisioned for 5.4

Task-number: QTBUG-29806
Change-Id: I4cb8bca6ac6fe8040871734c88aabcd392c1d696
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>