symfony/symfony — pull request #7686 by uwej711 (2013-04-16 19:41:03+00:00)
Title: [HttpKernel] fix overwriting of request's locale if attribute _locale is missing

In addition to https://github.com/symfony/symfony/pull/7516 same change for the 2.1 branch, see comments on https://github.com/lunetics/LocaleBundle/pull/59