joomla/joomla-cms — pull request #3196 by infograf768 (2014-02-27 14:00:31+00:00)
Title: Porting to 2.5.x loading en-gb language first

This port the same PR that was merged into 3.2.x
It lets load en-GB language files before other language packs to cope for missing strings.
To test, delete some strings from any non en-GB language file and display the results, in admin or site.
Instead of the constant, one will get the English (en-GB) value.