In DVCS, changesets are not in date order.
Because Mercurial backend inserts changesets from eariest, 'ORDER BY id'
means 'order by revision number'.

Contributed by Yuya Nishihara.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@4611 e93f8b46-1217-0410-a6f0-8f06a7374b81