teeinput

Now proof of Ord_jump_cardinal uses
ordertype_pred_unfold; proof of sum_0_eqpoll uses bij_0_sum; proof of
sum_0_eqpoll uses sum_prod_distrib_bij; proof of sum_assoc_eqpoll uses
sum_assoc_bij; proof of prod_assoc_eqpoll uses prod_assoc_bij. Proved
well_ord_cadd_cmult_distrib.

#! /bin/sh
#  teeinput -- start a program and log all inputs to a file
#     environment variable $LISTEN specifies the file name
tee -a -i $LISTEN | $*