In case git repository contains latin-1 path,
although Redmine uses "git log -C core.quotepath=false --encoding=UTF-8",
log encoding is latin-1.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@5027 e93f8b46-1217-0410-a6f0-8f06a7374b81