Added the new runtime parameter DUMBBELL_T_LIGHT to specify the previously
hard-coded dimensional parameters in the dumbbell_initialization module.  Also
used G%x_ax_unit_short to describe the units of the DUMBBELL_LEN.  By default
all answers are bitwise identical, but there is a new entry in the
MOM_parameter_doc.all files for the dumbbell test case.

  Added the new runtime parameters KELVIN_WAVE_PERIOD, KELVIN_WAVE_SSH_AMP and
KELVIN_WAVE_INFLOW_AMP to specify the previously hard-coded dimensional
parameters in the Kelvin_initialization module.  This change includes the
addition of 3 new elements in the Kelvin_OBC_CS type.  By default all answers
are bitwise identical, but there are new entries in the MOM_parameter_doc.all
files for configurations using the Kelvin_initialization module.

  Added the new runtime parameters TIDAL_BAY_PERIOD and TIDAL_BAY_SSH_ANOM to
specify the previously hard-coded dimensional parameters in the
tidal_bay_initialization module.  This change includes the addition of 2 new
elements in the tidal_bay_OBC_CS type.  By default all answers are bitwise
identical, but there are new entries in the MOM_parameter_doc.all files for
configurations using the tidal_bay_initialization module.