Framework trunk

[Richard S. Hall]

For those using framework from trunk, I've merged work from my sandbox 
into the trunk...the changes are fairly substantial.

The changes are not complete and the API will likely be in flux for a 
while, but the framework should be reasonably stable (i.e., still 
passing the CT). The big change for now is the introduction of a new 
resolver implementation.

If you are someone experiencing "hangs" from long resolver cycles, feel 
free to try the snapshot and see if it makes a difference for you. In 
fact, any usage and reporting of issues would be helpful.

Thanks.

-> richard

p.s. Currently, I am unable to publish a snapshot, but I will try to do 
that later (for the time being you can build from trunk).