New version of mock working (I think)

[Mike McLean]

Clark Williams wrote:
> Not smart enough to argue that we should wait for our build system
> clients to weigh in. Sigh...
> 
> Dan/Jeremy/Mike/Andreas/et al
> 
> How are you going to use file locking? Do you just want mock to lock
> the status file when we're changing state, or is there something else
> I'm missing?

Pretty much. The lock is to prevent the watcher from reading a partially 
written status file.