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I think this is what nelgin/Keyop was asking for via IRC.

Also a bit more constification and cleared up the legacy sbbs_get_ini_fname()
usage: the hostname argument hadn't be used in a long, long time.

Needed for text.dat support in SBBSecho

load_cfg really should be made either a static library or an exported
function from libsbbs.so that everything reuses. Kind of silly to be
recompiling and linking these files with every app now.

CID 174223
CID 174227
CID 174461
CID 174519
CID 229602
CID 319040
CID 319137
CID 319159

While we're doing that, actually use it in SyncTERM so the offline
scrollback retains fonts.

Also, fix an issue where the current mode would be updated with
the custom parameters when you changed them.

Finally, remove some unused variables.

Don't return an error if the node#/node.cnf file can't be opened for all uses of load_cfg() except from the terminal server. This fixes #214 for Tracker1

Fix issue reported WitNik (BGGRSCYN) on DOVE-Net:
```
sbbs@raspberrypi:~ $ /sbbs/exec/umonitor -iC
...
sh: 1: /sbbs/exec/syncterm-iC: not found
```

when selecting a node (data comes from node#/client.ini). For Nelgin.

Was using <data_dir>/temp to check for free space. data/temp is
not a normally created directory, so usually this check would fail
and just report 0 bytes free space. Instead, lets check the data
directory itself.

Combined with a fix in uifc32.c, this fixes some problems with spawning
external programs (e.g. to edit files, run scfg, echocfg, etc.) and
when returning having a different keyboard input functionality and the
screen all fubarred. Tested with Linux/ncurses.

Added an "All Servers" option.
Fixed the "Telnet server" (now "Terminal Server") to set the correct/modern semaphore file.
Simplified the implementation of this function.

(e.g. logon, new-user, quiet mode) - these are value node status values
with a user on the node.

Also address GCC warnings about unsafe sprintf usage, e.g.
warning: ‘%s’ directive writing up to 79 bytes into a region of size 59

rather than just falling over and twitching like an injured slug

If jsexec is used for a CGI script and the SBBSCTRL env var was not
set, a warning would be printed (to stderr), even if the -c option
was used to specify the path to the ctrl dir.

get_ctrl_dir() now accepts a boolean argument to specify whether to
print a warning when the default value ("/sbbs/ctrl") is used.
Pass FALSE for jsexec, TRUE for other callers (currently).

Removed some unnecessary carriage returns from printf statements.

Moved twitlist.cfg and spamblock.cfg to "Edit Filter File" menu.

Updated Menu Item names (e.g. "Configure BBS" rather "Run SCFG").
Added menu options to view echostats.ini and badareas.lst

Fixed capitalization and description of "SBBSecho".

stack. Use the heap instead.

As reported by Ragnarok (DOCKSUD)

not set (or blank), use the default ("/sbbs/ctrl") and print a warning to
stderr. This resolves a FAQ for sysops that struggle with setting the SBBSCTRL
env var, but do have sbbs install in /sbbs or a symlink from /sbbs to where
sbbs is actually installed.

Note: this function is different than the one previously defined in getctrl.c
but never used. If/when we ever really need to support PREFIX, then perhaps
we'll use that one (which copies a string to a buffer).

text.

You'll need to perform a clean rebuild.

Most of the copyright years in the source code were misleading (the date of
most recent publish was actually later) and all were unnecessary. I've been
removing copyright years piecemeal, for a long time, but I decided it was time
to just perform a bulk search and (mostly) replace. In some cases, I left
old copyright years on files that either are not used (and soon to be removed)
or obsolete and unlikely to ever be touched again (e.g. Win9x FOSSIL VXD). Some
of the runtime binaries still contain copyright years and those were updated to
2018.