rails/rails — pull request #13941 by amatsuda (2014-02-04 13:26:07+00:00)
Title: HTTP Authentication header could include unquoted values

Since f71cca9e1007bd928ec6fe27e3b3147ec59afac7 (which was included in 4.0), AC HttpAuthentication stopped accepting unquoted values in the header string.
This patch fixes the incompatibility.