W is not set when Hydrostatic is TRUE

[mmanyin]

W is an export from DYN, but in DynCore_GridCompMod.F90 it is only set when Hydrostatic is FALSE. To remedy this I have introduced code to compute W, in the branch feature/mmanyin/export_W_when_HYDROSTATIC. I would welcome feedback on the approach that I've taken.

[mathomp4]

Well this is a @wmputman sort of thing. Here is a comparison link for Bill:

develop...feature/mmanyin/export_W_when_HYDROSTATIC

[mmanyin]

Just checking in on this...
@wmputman - to compute W, is it acceptable to save OMEGA from Run1, and then in Run2:

if (HYDROSTATIC) then
call MAPL_GetPointer(export,temp3d,'W', rc=status)
VERIFY_(STATUS)
if(associated(temp3d)) temp3d = -1.0 * save_omega * (zle(:,:,1:km)-zle(:,:,2:km+1)) / dp

thanks

[wmputman]

I would rather just leave this to fill with all 0's or undefs. It should be a nonhydrostatic export exclusively