Sorted global project vars alphabetically

This just makes them easier to find in the list.
Add start and end date/time to advanced tests (PHI Kanban #3515)

This is off by default since it only works on Linux/Unix/Mac systems and not
Windows.  This is extremely simple.

Basic unit tests and manual verification.

Build/Test Cases Summary
Enabled Packages: TriBITS, CTeuchos
0) MPI_DEBUG => passed: passed=160,notpassed=0 (3.29 min)
1) SERIAL_RELEASE => passed: passed=158,notpassed=0 (1.90 min)
Other local commits for this build/test group: 5804b1f, 82ade12, f86ac78