Developer credits
Git commits in Moodle 3.1.4 by Davo Smith
commit 00b860d0d11078d91beb542e49684a36fa7cbc3b Author: Davo Smith <git@davosmith.co.uk> Date: Thu, 16 Oct 2014 19:52:31 +0800 Tag: v3.1.4 MDL-47198 filelib: fix curl handling headers with no value