Developer credits
Git commits in Moodle 3.2.1 by Davo Smith
commit 31e4c05002d098f640b042f09440f2c44df48eb4 Author: Davo Smith <git@davosmith.co.uk> Date: Thu, 16 Oct 2014 19:52:31 +0800 Tag: v3.2.1 MDL-47198 filelib: fix curl handling headers with no value