[regress/Makefile regress/rekey.sh regress/integrity.sh
regress/sshd-log-wrapper.sh regress/forwarding.sh regress/test-exec.sh]
use -E option for ssh and sshd to write debuging logs to ssh{,d}.log and
save the output from any failing tests. If a test fails the debug output
from ssh and sshd for the failing tests (and only the failing tests) should
be available in failed-ssh{,d}.log.
[multiplex.sh test-exec.sh sshd-log-wrapper.sh]
Add optional capability to log output from regress commands; ok markus@
Use with: make TEST_SSH_LOGFILE=/tmp/regress.log