*_net_type hfield has a value of 0 (NET_NONE) - according to smbdefs.h.

be shown at the top of the screen or relative to the bottom of the header.

console.msghdr_top_of_screen):
a hack to let scripts know whether the most-recently displayed message header
was displayed on the top of the terminal screen (or not). This allows us to
show avatars at the top of the screen when the header is up there, rather than
relevative to the bottom of the header (the pos can vary, depending on stuff).

strrchr() here to find terminating chars (quotes, parens, brackets).
e.g. '"Joe Shmoe" <joe@shmoe.com>, "Fred Smith" <fred@smith.org>'
would be parsed as 'Joe Shmoe" <joe@shmoe.com>, "Fred Smith'.

'data_length', but not always (e.g. may include text from some header
fields, excludes any non-text data fields).
Mark 'data_length' msg header property as read-only.

back in 1993, but were never needed/used.

header fields. Eliminate smb_getcontenttype() - now unnecessary.

the string being passed around.

or NULL if not relevant (not a MIME-encoded message).
Added smb_countattachments(): returns the number of file attachments in a
MIME-encoded message.
Added SMBMSGTXT_NO_TAILS definition to be used in place of '0' for
common smb_getmsgtxt() mode argument value.
The amount of white-space after "Content-Type:" and the content-type value
is now more flexible (0 or +1 spaces/tabs are fine).

sendfile() no longer logs "attachment" when a file description is provided.

download_file_attachments() and expose via new JS "bbs" method. Currently
this only reall works for the mail base.

since the smb_t already contains a subnum and we were passing a pointer to the
sbbs_t::smb to lower-level called-functions anyway.
Let's not mix-up class-scope with function arguments.

Fix the missing carriage-returns in the shell (bash) prompts by always building with the stderr logging
support (in *nix builds) - but run-time disable as desired via EX_NOLOG option. I've been wanting to get
rid of that "XTERN_*" macro for a long time anyway (it's "XTRN" damn-it!). :-)

Added EX_NOLOG to *nix shell mode - don't log the shell output.

- Renamed EX_INR and EX_OUTR to EX_STDIN and EX_STDOUT
  (with duplicate variables for backwards compatibility)
- Removed long-obsolete EX_OUTL, EX_SWAP
- Added (new) EX_NOLOG

intercepted output to stderr won't be logged.

Since QUOTEWRAP *is* used, just define that bit flag specifically.

list (smb_list) for thread-safe SMB stack storage.

and frankly could cause all kinds of havok with multiple thread (e.g. nodes)
pushing and popping SMB's concurrently. eek.

More use of get_index() if available, to help speed things up a bit.  Also, made a further optimization: when checking a sub-board if it has polls, check in reverse rather than forward.  Since polls & voting is a relatively recent feature in Synchronet, hopefully it should finish faster going in reverse.

SlyVote v1.02: Now uses the new get_index() messagebase function, if available, for getting the message index objects when determining if a sub-board has polls (in the subBoardHasPolls() function).  get_index() is faster than iterating through all messages and calling get_msg_index() for each message.

of the message header so that functions that need it (e.g. bbs.show_msg_header)
don't use/show stale data. This change requires the updated smb_copymsgmem()
which clear/sets message convenience pointers upon copying hfields from one
message header to another.

Did not clear/set convenience pointers (e.g. msg.subj), so they would point
to the source message hfield_dat buffers which may be freed or garbage.
Apparently nothing that used smb_copymsgmem() used the convenience pointers
(before now), so it hasn't been a problem before now. <shrug>
It became a problem becaue I'm going to use this function in js_put_msg_header
to fix a problem where the underlying smbmsg_t representation is not current
even after MsgBase.put_msg_header() is used.

(objects, in the same format as returned by the get_mgs_index() method)
much faster than iterating through a loop, calling the get_msg_index() method
for each message. If you want to load messages (e.g. headers, text), filtering
by criteria found in the message index (attributes, to/from user, subject CRC)
loading a list of indexes and filtering before calling get_msg_header() for the
selected messages is much faster than previously available MsgBase object
methods (e.g. get_all_msg_headers()). If you don't need to filter the loaded
messages (you really want *all* message headers), then get_index() is of no
benefit to you, the script-writer. This is most useful for the "mail" msgbase
where selective loading of messages is more common.

Ctrl-A (ASCII 1) char. This is wrong. A literal Ctrl-A sequence is ^AA.
I'm only addressing one of those instances in this commit since it *also*
appears to be an off-by-one bug where it's treating *all* Ctrl-A sequences as
though they were ^AA - so just #ifdef'ing out until Deuce takes a look at this.

blank line) sequence.

(use the sysop 'D'elete command to quickly delete a range of messages).