mod_http_oauth2: Reflect changes to defaults etc
- Resource owner password grant was disabled by default
- Tokens now include a hash of client_id making it possible to be
reasonable sure that they were issued to a particular client
---
summary: Log a message once per minute
...
This module sends `-- MARK --` to the log once per minute. This may be
useful to give a sense of how busy the server is or see that logging and
timers are still working.