To avoid confusion for users, Trilinos now sets
Trilinos_ENABLE_SECONDARY_TESTED_CODE=ON by default.

I have already addressed the issue of improving TPL failure messages as part
of TriBITS #41 (pushed to github repo).

The checkin-test.py script will now explicitly set
Trilinos_ENABLE_SECONDARY_TESTED_CODE=OFF for the TP default builds.