Add support for the native OPeNDAP capabilities in the netcdf tools in newer version of MATLAB. Also fix some of the issues with regards the precipitation and evaporation variables (notably setting the evaporation to P_E instead of subtracting it from the precipitation rate and setting it to P_E).
This adds a new variable to the forcing output file (longwave surface flux) and allows the input struct to contain a new field (nshf) which is the pre-computed net surface heat flux. This approach means the flux is not calculated in here but is instead dump from the nshf variable. If this variable is not in the input struct, the old way still works. The calculation of the net surface heat flux is also fixed (the sign of the flux was the wrong way around before) based on the NCEP operational FORTRAN scripts
Add support for interpolating the data on alternative grids e.g. the relative humidity and sea level pressure