Logfiles do not rotate on Windows

Like the subject says.

Paired with the lack of an external logrotate daemon on Windows, this means that disk growth can become unbounded rapidly.

The issue names no files, tests, or entry points. Start by locating CouchDB's logging and rotation implementation and the Windows-specific path, then compare its behavior with the absence of an external logrotate daemon; done means Windows logfiles rotate without unbounded disk growth and the behavior is covered by an appropriate test.

Written by the indexing model from the issue text.