Added the compute_volume_avg method to compute <T> and <V_rms>
Added the volume_avg flag to the Output structure to control the output
of <T> and <V_rms>
Added the output_volume_avg method to output <T> and <V_rms>
Changed output_volume_avg to write to a single file with output in the following
format:
cycle time <T> <V_rms>