when creating the df file, be sure you truncate any existing file

reset ExitStat between individual jobs to prevent bogus behaviour

fix bogus printf keyletter

move 7BIT information from per-mailer to per-connection so it can
be tweaked based on the other end

Apollo/POSIX changes -- leading pathname of // can legally have
different semantics; ensure that this never happens when building pathnames

fix problem causing excessive rewriting of headers being queued

fix bogosity in H lines in queue file for null $x expansions

move SIGCHLD setsignal call so that first zombie is caught

more error message cleanup

don't output null headers into queue file

define $i during queue runs

avoid problems if a tf file already exists; improve logging

more attempts to trap fd 0 1 2 problem

two processes had the connection cache causing improper QUITs

improved logging (log ctladdr on recipients

avoid duplicate reads of Errors-To: list

check fflush, fclose, and fsync return values in a few critical places

fix a problem causing C mailer flag to be ignored if the message
was queued

open file debugging; avoid creating excess tf files on first queueup

turn off GrabTo when reading the queue to avoid duplicate deliveries

check for possibility of fdopen returning null

8.6.1: A/UX and Encore UMAX V patches; fix to not toss error messages
too early

fix problem causing "c" option (don't connect to expensive mailers)
to be ignored in some SMTP runs.

avoid duplicate error messages

relax queue filename validation for AIX and other pid > 32000 OSes