struct  PK_TOPOL_fcstr_facet_fin_s
       {
       int     facet;
       int       fin;
       };
typedef struct PK_TOPOL_fcstr_facet_fin_s
               PK_TOPOL_fcstr_facet_fin_t;
struct PK_TOPOL_fctab_facet_fin_s
       {
       PK_TOPOL_fcstr_facet_fin_t *data;
       int   length;
       };
typedef struct PK_TOPOL_fctab_facet_fin_s
               PK_TOPOL_fctab_facet_fin_t;


This is a support structure for PK_TOPOL_facet_r_t. It represents a two
column table which 'groups' sets of fins owned by the same facet together.