Move from fortran modules to headers for 3rd party libs

We need to investigate if we can remove dependencies for NetCDF fortran 90 modules and use the NetCDF fortran 77 headers instead. Fortran 90 modules need to built with the same version of the compiler used to build the software that uses them. This creates difficult to manage (need NetCDF built with compiler ver X, if using compiler ver X to build scorpio) dependencies on installed software.

We can continue to use fortran modules for software included with scorpio (for software built everytime we build scorpio)