*nix-builds (for stdio WWIV doors).

Use drive mappings (e.g. D:, F:, G:, H:) rathe than absolute paths to node_dir,
ctrl_dir, data_dir, and exec_dir in drop files.
Also: fixed what appears to have been a copy/paste error in the node_dir
and ctrl_dir mapping to Win32-shortnames for non-native doors on Windows.

attachment is attempted but unsupported.

- writes outbound netmail to SMB rather than FTS-1 Stored Messages (*.msg)
  this means you must have SBBSecho v2.30 or later in order to export FTN
  netmail (for file attachments, you'll need SBBSecho v3.04 rev 3.78 or later)
- removed support for the now deprecated "default address" feature
  (nowadays, people are much more likely to gate FidoNet over Internet rather
  than the reverse!)

The QWK-to-NetMail function still needs a similar overhaul.

(e.g. "C:"), skip it on *nix and if the path contains backslashes, convert
to forward-slashes (for all OSes). This resolves an issue of sending a
netmail file-attachment that was created on a Windows/MS-DOS type system
and then scanned/exported on a *nix system. The FTN "stored message"
convention is to have the full path of the attached file in the message
subject.

Hopefully nobody wants to use outbound directory names beginning with "x:"
on *nix. :-)

included an "old-style" (not MIME-encoded) file attachment (where the file path
is in the subject and the FILEATTACH aux-attribute flag is set), the
corresponding netmail attribute flag would not be set in the stored msg (*.msg)
file. Also simplified the create_netmail() function prototype/usage, removing
the "file_attached" argument (use the hdr.auxattr instead).

1: Wrap SSH cryptDestroySession() calls in a wrapper that tracks the number of
    open sessions and logs errors upon failure (and remaining session count).
    This is how I found the SSH session leak in sbbs_t::hangup().
    Also found multiple cals to SSH_END() which were invalid (no session to
    destroy) and removed them.
2: If errors are detected when unpacking a REP packet, save the .rep file
    (in data/file/<filename.rep>.<timestamp>.bad) for later inspection.
    Also added some VOTING.DAT debug output (to be removed later).
    Trying to the get to the bottom of the
    "smb_addvote thread_back field missing" errors.

pause and CLS after.

REP unpacking).

'Resource/space exhausted' errors in TLS and SSH:
The wrong ssh_session is being passed to cryptDestroySession() in
sbbs_t::hangup() (introduced in rev 1.615), this call to cryptDestorySession()
fails (returns -1, bad param) thus leaving the actual
ssh_session never destroyed (leaked).

you can't print and free it again after calling that macro.

cast from pointer to integer of different size

format not a string literal and no format arguments [-Wformat-security]

emusetup.bat).
It was generating an (easy to fix) GCC 5.4.0 warning:
format not a string literal and no format arguments [-Wformat-security]
But the line was not needed, so just removed it.

format not a string literal and no format arguments [-Wformat-security]

warning: format not a string literal and no format arguments [-Wformat-security]

warning: format not a string literal and no format arguments [-Wformat-security]
   sockprintf(sock,sess,(char*)resp);
   sockprintf(socket,session,sys_error);

of lprintf() misuse.

unused variable 'p'
comparison between signed and unsigned integer expressions

 in expansion of macro 'JS_ARGS_OFFSET':
unsigned long is the same size as a pointer (rather than unsigned int)
on the supported target platforms/tool-chains.

::lprintf() usage.

fix the resulting warnings.

and resolve the resulting warnings.

resolve the resulting warnings.

and send_mlsx().
Fix numerous printf-style argument bugs, many in the TLS and MLSx support.

Put "TLS" in the failure log messages rather than repeating "FTP".

Was this pasted from somewhere else?

- Since rev 1.556, mailproc_to_match[] would only ever contain one mail
  processor (index) value, even if the RCPT TO address matched multiple
  mail processor "To" keys in mailproc.ini, so only the first-matching
  mail processor (with a "To" key) would be executed for the msg.
- mailproc_match, meaning the destination was a non-passthrough
  external mail processor, in which case the destination (RCPT TO) address
  may *not* match a valid local user account, would be set for *passthru*
  mail processors potentially resulting in the following error (and an
  undelivered mail message): !SMTP can't deliver mail to user #0
  only set mailproc_match to a valid mail proc index if the recipient matches a
  non-passthru mail processor.

Windows debug build.

instead of stdout.

not known/available (e.g. certain types of SSH login failures).

to use this function in bbs_thread() for SSH failed login attempts and thus
enable the perm-IP-filtering (LoginAttemptFilterThreshold) functionality.
Right now, it's only a "bad login" if the "Getting channel type" doesn't
return "session", but we could (and likely will) use it for more SSH login
failure modes which indicate a likely hack-attempt.

description string ('node') in SSH-related log messages (e.g. errors) from the
output_thread: No more "Node 0" log entries from here.

    "Deprecated file open mode: 'e'"
If this is your script generating this warning, either remove the 'e' from
the File open() mode string (it had no effect anyway) or change to 'x' to
get the real/working exclusive-open functionality (added in v3.17).