* Log OldBinary even if there are no trace files
DeterminismCheck and OldBinary attributes don't actually depend on
information in the ProgramStart event, so we can add them
unconditionally.
* Add JoshuaSeed attribute to Test element in test harness
* Add NoTraceFilesFound event in test harness
There's already something similar: NoTraceFileGenerated. It appears that
the original author only wants to log that if the process exited 0
though. I'm not sure what the reason for that is so I think it's safer
to add a new event. This will make it more clear if say an old binary is
corrupt.
da1ffebcb0