NET_DoSort(SortStruct * sort_struct, int (*compar) (const void *, const void *))
NET_DoSort(SortStruct * sort_struct, int (*compar) (const void *, const void *, void *))
NET_DoSort(SortStruct * sort_struct, int (*compar) (const void *, const void *)){    XP_QSORT(sort_struct->list, sort_struct->num_entries, sizeof(void *), compar);} 