Rename/copy detect in qgit

I have pushed (git://git.kernel.org/pub/scm/qgit/qgit.git) some
patches to add file rename/copy detection to qgit.

It was harder then expected due to some subtle details, and still the
merge combined case is missing, anyhow I think feature is usable and
should be quite stable.

If someone is interested it would be great to give it a try because
testing is required.

BTW it is now possible to view file rename/copy info in patch view as
well in file list (see screenshot), both views are synced and old
commands (as example double-clicking on file name) should still work
as expected.

Screenshot: http://digilander.libero.it/mcostalba/rename_copy.png

Thanks
Marco