[diff] hgrc context

[Patrick Waugh]

The tutorial says this:

8.5. Prevent qrefresh from updating timestamps

If you're keeping your patch queue under revision control, it can be
quite annoying when every qrefresh updates the timestamps in your
patch. To prevent this you can add this to your .hgrc

[diff]
nodates=1

Does this have to be in the repos hgrc, or can it be in the per-user
and/or global hgrc?

Patrick