net-helper-ml: Added verbosity option
net-helper-ml: Added verbosity option

Added verbosity option to ML/MONL, allowing to set the LOG level.
Default value is DCLOG_ERROR (1). The lower the number the less
messages are printed out. Example:
./streamer -n "verbosity=2"

davidek/peerstreamer-Streamers,davidek/peerstreamer-Streamers