Add "print mail queue" mode (-bp flag or call as "mailq")

The routine "sendto" is now a system call (yeuch!); change our sendto
to "sendtolist"

Clear the envelope in the child in server SMTP to insure that our oh so
helpful parent doesn't delete our transcript; move the transcript and
temporary file pointers into the envelope; pass the envel

Clear the envelope in the child in server SMTP to insure that our oh so
helpful parent doesn't delete our transcript; move the transcript and
temporary file pointers into the envelope; pass the envelope to other
routines in the holy war against global variables; split off envelope
routines from main.c to envelope.c

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implement SMTP auto-shutdown on 421 codes; clean up some error processing
items, particularly in SMTP; don't reinstantiate error message bodies after
queueing; other minor changes. This is all clean

implement SMTP auto-shutdown on 421 codes; clean up some error processing
items, particularly in SMTP; don't reinstantiate error message bodies after
queueing; other minor changes. This is all cleanup from 3.253.

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fix a number of problems left over from yesterday's delta. The big
triumph is being able to delete the parameter from disconnect().

Many changes resulting from a complete code readthrough. Most of these
fix minor bugs or change the internal structure for clarity, etc. There
should be almost no externally visible changes (other

Many changes resulting from a complete code readthrough. Most of these
fix minor bugs or change the internal structure for clarity, etc. There
should be almost no externally visible changes (other than some cleaner
error message printouts and the like).

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lint it

run SMTP jobs in a subprocess so that multiple jobs will work. This
delta also changes the envelope data structure so that flags are in
a bit map, and adjusts some of the semantics. The transcript

run SMTP jobs in a subprocess so that multiple jobs will work. This
delta also changes the envelope data structure so that flags are in
a bit map, and adjusts some of the semantics. The transcript is now
local to an envelope. A bunch of old code is deleted. A serious bug
was fixed in the "run in background" code. Etc., etc.

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split operation mode ("-bx" flag) and delivery mode ("d" option)
so that operation mode can apply to SMTP/daemon connections also.

drop old dir hack

fix bug in back compat dir code

Put temporary file mode on the F option

Arrange for queue.c to aapt to systems w/o new directory code

<ndir.h> => <dir.h> for maximum portability

completely instantiate queue files for all mail, even if not needed;
fix a bug that would probably come up once every ten years in creating
the queue id. should merge argv flag processing with optio

completely instantiate queue files for all mail, even if not needed;
fix a bug that would probably come up once every ten years in creating
the queue id. should merge argv flag processing with option processing.

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don't put commas in non-address fields; have -bq clean up its temp files

output headers with commas into the queue

don't assign $s to be the sending host (this mucks up Received:
lines) -- instead just use HELO messages; chdir into queue directory
and make all pathnames relative; be more conservative in creating

don't assign $s to be the sending host (this mucks up Received:
lines) -- instead just use HELO messages; chdir into queue directory
and make all pathnames relative; be more conservative in creating
queue id's -- in the event you get file table overflows, etc.

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install new state-driven scanner; make everyone use it, thus fixing
problems of quoted commas, etc.

simplify timeout code; allow multiple simultaneous queue runs so that
large messages don't freeze things up; fix EINTR problem in sfgets;
clean up canonname to be really correct; lots of misc. cleanup

clean up time manipulation to always be current; assign job
id's earlier to make sure there is always one with a message.

log locked files in queuer; don't mistakenly start up two runqueue's

put queueup log messages on a higher logging level

log more info (on log level 11); try to detect wild accept loops;
some minor cleanup and debugging checks; fix NoConnect option to;
only apply to expensive mailers (regardless of sendqueue order)

clean up queueing; log time in queue.
**** This delta invalidates mqueue files ****