symfony/symfony — pull request #2971 by lsmith77 (2011-12-26 23:34:31+00:00)
Title: use the forward compat version in the Filesystem service

by changing the service it should fix any type hints for the Filesystem class inside 2.1, but it shouldn't affect anyone still type hinting the old location in 2.0 since the new forward compat file extends the old file.

See
https://github.com/liip/LiipImagineBundle/commit/00c988bf0c0718a6861d59877e1aa525738669f7#commitcomment-820879