Qt Multimedia can be compiled with either GStreamer 0.10 or 1.0. 0.10 takes precedence over 1.0 if both are available (1.0 will be used by default in Qt 5.6). Auto-detection can be overridden with -gstreamer <version>. Change-Id: I74d58d2c146c842902375b4d1e5e6e96d32addac Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>