Author: Damyon Wiese
MDL-39312 Cache lock plugins - fix undefined var and language typo
http://git.moodle.org/gw?p=moodle.git;a=commit;h=25927c42ce4addae682fac331bfaddfb166d15bf
http://github.com/moodle/moodle/commit/25927c42ce4addae682fac331bfaddfb166d15bf
+ 2.5 en [locknamedesc,core_cache]