Add logging infrastructure

[bpkroth]

We've noticed that troubleshooting, particularly where there is cross process/language waiting or lookups involved, could be added by some simple print statements to track the status of various operations (e.g. assembly lookup, synchronization points, etc.)

However, these statements are undesirable in a production environment so have been eschewed thus far.

We should implement a logging mechanism to make that configurable on a case by case basis.

[bpkroth]

@grlap for visibility