Git commits in Moodle 2.7.6 by Mitsuhiro Yoshida

commit 56479e072167d905d3585a433ceb4999fcf30be5
Author: Mitsuhiro Yoshida <mits@mitstek.com>
Date:   Sun, 22 Feb 2015 22:18:56 +0800
Tag:    v2.7.6

MDL-49259 lib: Fix for unzipped Japanese filename character corruption