More use of the "conditional newline" (^A?) code rather than hard-coded
CRLFCRLFs.

This won't impact Synchronet as it has a separate signal handling
thread, but we still need to behave properly for processes that
don't.  I'm also saying that ENOMEM does not indicate a disconnection,
though it may be better to pretend it was disconnected...

User number is not always relevant (e.g. could be #0) when sending
netmail, so don't show that. And the CRLF at in the Forwarded string
appears extraneous.

As pointed out by mlong.

As reported by mlong

Use the new BDATEFMT @-code.

- JS system.operator_available property (read/writeable)
- SYSAVAIL @-code which expands to LiSysopAvailable or LiSysopNotAvailable
  (use the new SYSAVAIL @-code in the chat menu to show availabilty to chat)
- ;avail sysop command (in str_cmds.js) to toggle sysop availability
- Changed LiSysopIs text.dat string to be a format string (include %s) and
  the trailing \r\n, so that it can be used in str_cmds.js or anywhere else
  to report sysop availability to chat, or can be set to blank string to
  display nothing (this would not work previously).

I stole one of these patterns from 'git-size'.

for the (newly-added) TerminalMouse string.
Also added MouseTerminalQ string.

Put the example text in parens for IceColorTerminalQ.

now accept multiple comma-separated addresses.
Include the problematic NetMail address in the InvalidNetMailAddr string.

itself now).

Fix XtrnProgLstUnderline for textgen.c compatibility.

of external program names to be displayed:
32 chars in multicolumn mode
40 chars in singlecolumn mode

the address part (using %.0s).

to accommodate longer group / sub-board names without an ugly line wrap.

the cause of lines of search results scrolling off the screen before an
auto-pause [Hit a key] prompt, would be displayed. Reported by Alterego.

The following message list formats were changed to no longer
artificially limit the length of displayed message subjects. If you have
a wide terminal (> 80 cols), show more of the message subject.
This is done by using the newly-supported bprintf(P_TRUNCATE,...)
feature, so no printf-format magic needed here.

clear-screen (CLS) in logon.cpp.
Use of the new ELLIPSIS @-code.

VS: ----------------------------------------------------------------------

Disable the "Swap DEL/BBS key" question, by default (if the user sends
DEL, do the swap).
Beautify the backspace key prompt/report thing (add/remove blanks lines
mostly).

This moved the MsgCarbonCopyList item down.

New text.dat strings:
- PetTerminalDetected (renamed from PetTermDetected)
- PetTerminalQ
- TerminalAutoDetect
- TerminalColumns
- TerminalRows
- TerminalMonochrome
- TerminalColor
- TerminalIceColor
- IceColorTerminalQ
This also moved the MsgCarbonCopyList definition to the end of the file
for now.