Developer credits
Git commits in Moodle 2.3.9 by Tony Levi
commit 94e36bc01fc31f389620079840270c2325638309 Author: Tony Levi <tony.levi@netspot.com.au> Date: Thu, 06 Jun 2013 12:41:19 +0800 Tag: v2.3.9 MDL-40035: Avoid rebuild_course_cache always for empty course