@sueloverso, @michaelcahill:

If we crash half-way through creating the base-config, we have a partial base-config and we won't fix it up, if we crash after creating the "WiredTiger" file but before writing the base-config, we'll never write the base-config.

This changes removes the ordering constraint between writing the "WiredTiger" file and writing the base configuration file. I think that's safe, but it does concern me.