Improved last commit.
Fixed daq_tag::process for multiple connections.

Not blocking for a connection to be established.
Fixed ring access.
Added daq_tag checks.
Expanded DAQ state information.
Removed daq_tag checks again.

It is checked by item head.
Updated DAQ state assignments.
Fixed finishing DAQ.
Fixed DAQ initialization if CONTROL is set.
Updated default timing values.
Increased chunk size of file_tag for piconfs.
Unified constants.
Updated timing defaults.
Updated distribution files.