* mitogen/ansible_mitogen should only generate ERROR-level logs in
log_path unless -vvv is enabled.
* Targets were accidentally configured to always have DEBUG set, causing
many log messages to be sent on the wire even though they would be
filtered in the master.
Closes#317.
mitogen/master.py:
Annotate forwarded log entries with their original source, logger
name, and message.
ansible:
mark stderr in red with -vvv
Tempting to make this appaer 100% of the time, but some crappy
bashrcs may cause lots of junk to be printed.