Backport of "rtpsession: rename RTCP thread" into 1.16
requested to merge tpm/gst-plugins-good:backport-mr-549-into-1.16-rtpsession_rename_rtcp_thread into 1.16
Backport of !549 (merged) "rtpsession: rename RTCP thread".
Commits:
- ce0fb9bd rtpsession: rename RTCP thread