Default encodings for repository files can now be set in application settings (Admin -> Settings -> Repositories encodings).
These encodings are used to convert files content and diff to UTF-8 so that they're properly displayed.
Multiple values are allowed (comma separated).

git-svn-id: http://redmine.rubyforge.org/svn/trunk@814 e93f8b46-1217-0410-a6f0-8f06a7374b81