Developer credits
Git commits in Moodle 3.3.3 by Mark Nielsen
commit 2cbe55875408637d3a1b68b73c085809fa301ea2 Author: Mark Nielsen <mark@moodlerooms.com> Date: Fri, 01 Sep 2017 06:47:00 +0800 Tag: v3.3.3 MDL-60001 core_files: Use local file for gzopen