Add explicit dependency on clojure.tools.logging

We are using some of the log functions from clojure.tools.logging
in trapperkeeper.  However, prior to this commit, we weren't
explicitly specifying a dependency on it and were instead
inheriting it from kitchensink.

This makes the dependency explicit.
Merge pull request #76 from cprice404/maint/master/add-missing-clojure-logging-dep

Add explicit dependency on clojure.tools.logging