Added comments to the gridfields_functions.cc code. It seems that the ugrid spec has move out from under this code over time and the code needs some tweaks to match the current version of the spec.
Added comments to the gridfields_functions.cc code. It seems that the ugrid spec has move out from under this code over time and the code needs some tweaks to match the current version of the spec.

OPENDAP/libdap4,OPENDAP/libdap,OPENDAP/libdap4,OPENDAP/libdap,OPENDAP/libdap4,OPENDAP/libdap4,OPENDAP/libdap4,OPENDAP/libdap,OPENDAP/libdap,OPENDAP/libdap4