[Cbc] Intermediate Results

[Jeff Willert]

I have recently started using CBC both standalone and through the PuLP
interface.  Some of my problems become rather large and take a significant
amount of time to run.  Unfortunately, I've been having issues with
computer reliability (power outages and such) and if the optimization
hasn't completed, I lose all of the progress which has been made.

Does CBC currently have the ability to write (to a file) the current best
solution at some interval, either in time or based on an iteration count?
I've been looking at the source code but I am only a moderate C programmer
and haven't been able to find an easy way to do this.  I'm happy to make
changes to the code myself on my local copy if someone could point me to
the correct location.  Even an approximate solution is better than losing
all progress.

Regards,
Jeff
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