On some Sun machines, it may have trouble reading the namelist.
In that case, break the namelist variable 'root' into multiple
lines like this:
root(1)
= '../pregrid/ON84'
root(2)
= '../pregrid/ON84_SST'
root(3)
= '../pregrid/ON84_SNOW'
You may also need to remove the unused namelist entry, such
as 'constant_full_name'.
