Make BC testing more robust. Now requires PDT_HOME env var to be set rather than fail silently. Plus Logs zip tidy up.

29394d95b3e1a63e73a3f3e31f9bab42cc1437f5 fbf_configs_0.0.a
36d82a2f1f927cbe91926e19c69fe74d9170b7de PDK_2.0.c