pickqdir
if (pickqdir(Queue[i], msize, e) < 0)
e->e_qdir = pickqdir(Queue[e->e_qgrp], e->e_msgsize, e);
es->e_qdir = pickqdir(Queue[es->e_qgrp], es->e_msgsize, es);
extern int pickqdir __P((QUEUEGRP *qg, long fsize, ENVELOPE *e));