[ic] Patch to differentiate between free shipping and unavailable shipping methods

[Mark Lipscombe]

Jon Jensen wrote:
> Mark,
> 
> Here's another squashed commit of your changes for the undef shipping 
> change:
> 
> http://github.com/jonjensen/interchange/commits/ship-return-undef
> 
> It is easiest to work with these patches on GitHub if you use a separate 
> branch for each change, and then later if we squash the commits so we 
> don't get every intermediate tweak on the way to a final patch.
> 
> Please let me know if that looks ok.

Jon,

That one also looks fine.  I'm still a Git newbie, I will do that from 
now on.

Regards,
Mark