HashTable_Set
HashTable_Set(&ar->members, memName, cached_hdr);
HashTable_Set(&odirs->table, cdir->name, odirs->list.last);
HashTable_Set(tbl, pathname, cst);
void HashTable_Set(HashTable *, const char *, void *);
HashTable_Set(&cached_realpaths, pathname, bmake_strdup(rp));