Create CopyPaste&RenameRasters

This is python script that (when run in portions) will create a folder of files containing the daily interoplated low and high rasters, where each begins with a number (indicating the day of the year) and ends in _H or _L. This way, all low and high Ts are in one folder, in numerical order, and other codes can "walk" pairwise through the folder to perform other functions with these as input.