[p4] what's the best way to determine the currentclient workspace?

[Robert Cowham]

> p4 changes -m 1 -s submitted //clientname/...
> 
> Don't forget submitted, though, so you exclude numbered 
> pending changelists.

And if you want to check the validity of the output from the above, then
(assuming 2345 is returned):

	p4 sync -n //clientname/... at 2345

If this command gives any results then the user isn't "cleanly" sync-ed to
the changelist.