As planned for 5.6, QtMultimedia now uses GStreamer 1.0 over
0.10 when available.
This means the binary packages will be based on GStreamer 1.0.

Task-number: QTBUG-47920
Change-Id: I9a18569ff96902116f0f6a759c185a5896f520d5
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>