Summary

Printing the log files (e.g., via wt printlog) does not currently show at which point WiredTiger was restarted. It would be quite useful to be able to see those spots in the log to aid with debugging.

More Details

All we need is to just mark this point in the logs for debugging purposes, which we can do just by adding a log_printf entry when WiredTiger starts. The log entry would ideally mention the WiredTiger version and perhaps also whether the last shutdown was clean.