Change-Id: I45e9fe90137d4a8306c3a5e4f636fa43425b978f
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/825>
is not updating the plugins frequently, it will save time when doing
`gst_init()`.
+**`GST_REGISTRY_MODE`. (Since: 1.20)**
+
+Set this environment variable to make Gstreamer change the file
+permissions of the plugin cache / registry. If not set, default is to
+limit read / write permissions to current user only. Set mode shall
+be from one to four octal digits as used in chmod.
+
**`GST_TRACE`.**
Enable memory allocation tracing. Most GStreamer objects have support