ocean build fails due to GOTM dependency with PGI on Summit

[philipwjones]

While attempting to build latest MPAS on Summit with PGI, the compiler can't find the mod file for mtridiagonal (a GOTM module) when trying to build one of the top-level drivers mpas_subdriver. There's no explicit include at this level and no reason for PGI to search for it. GOTM paths are (correctly) not in the search path at this level. I suspect PGI is following the module dependencies recursively further down. Working on it...