[Dev] unit tests are broken

[John Anderson]

I broke some unit tests with my recent ItemCollection checkin -- some 
classes, which aren't used, except for the unit tests went away and I 
need to update Ted's query unit test to reflect my changes to Query.

Unfortunately, I'm not able to run unit tests on my machine becuase of 
an apparent bug in the dll paths that hardhat sets up. So it may take me 
awhile to track this down.

John