Add the following options, both on the command line and in the config:

--output_info: Where to output INFO messages: stdout|stderr
--output_warn: Where to output WARN messages: stdout|stderr
--output_error: Where to output ERROR messages: stdout|stderr
--output_fatal: Where to output FATAL messages: stdout|stderr
--wrap_long_lines: Wrap long lines of output, or output each message on a single line.
--print_options: Print out effective config options, before starting.