Add a test program where looping in trick mode works seamlessly
-rwxr-xr-x 5891 gst-custom-player.py
-rwxr-xr-x 1146 gst-looping-video-1.py
-rwxr-xr-x 1088 gst-looping-video-2.py
-rwxr-xr-x 2780 gst-trick-mode-looping-1.py
-rwxr-xr-x 3135 gst-trick-mode-looping-2.py
-rwxr-xr-x 2207 gst-trick-mode-looping-3.py
-rwxr-xr-x 2350 gst-trick-mode.py