diagnose -t call with no recipients in header

freespace=>freediskspace, enoughspace=>enoughdiskspace to avoid
conflicts with some memory allocators (e.g., A/UX)

log message on too-large message

log premature end-of-message conditions when collecting messages

better (more accurate) labelling of 8bit code

only insist on CRLF for SMTP 8BITMIME

efficiency improvements

better use of extended DSN status codes

update copyright notice

better debugging message for message termination

null bytes in headers can cause data to be lost -- just ignore them

clean up problems with MIME 8 to 7 bit conversions

buffer error messages during collect phase (better implementation)

eliminate `D' line in qf file

fix some compile problems with message sizes

new DSN draft

add NoRecipientAction; make Bcc: field truncate instead of delete

cleanup to make gcc -Winitialized happier

tweak EightBitMode and F=8 options to do something useful

if a message exceeds MaxMessageSize, stop pushing the data to
disk -- it is just a possible denial-of-service attack

fix problems eating initial From_ line

fix a couple of bugs having to do with CRLF mapping

store dev information in qf file; add RFC 1428-specified
Content-Type: text/plain; charset=unknown-8bit header to messages
being converted from 8 -> 7 bit with no specific Content-Type

move hvalue extern declaration into sendmail.h

DECWRL extensions to qf file