Updates to the PRUDENCE data sets since 1/9/2004

Updated the interpolated monthly SMHI high-resolution precipitation data set precip.CRU.SMHI.HCA2_22.nc and the corresponding seasonal files precip.mean.SMHI.HCA2_22.nc and precip.stddev.SMHI.HCA2_22.nc due to unphysical values in the beginning of the monthly file.
Added the delayed DMI 50km simulations based on ECHAM5 T106 AGCM runs with the same SSTs as the HadAM3H experiments, i.e., the same SSTs as the standard PRUDENCE runs.