Update install-xtrn.js, make it apparent that debug mode does not install the...

See merge request !76

Update install-xtrn.js, make it apparent that debug mode does not install the door. Also do not recycle in debug mode (nothing was installed). 

This script had some funky work-arounds for the previous behavior, so adjust
them to recognize null input from the user. This fixes issue #201
reported by Ragnarok.

SBBSecho v3.12 exports the originating system's BBSID via a new
"BBSID" kludge and this allows avatar lookups (e.g. of FTN-posted
messages) using this solution.

Also, support MD5-obscured name (i.e. real name) avatar lookups.

This enables Avatar displays on real-name-only networks without leaking
real names into the SYNCDATA sub.

If the -realnames option is used, the unobscured full real names are
exported (as before).

If the (new) -aliasonly option is used, even the MD5 digest of users'
real names is left out.

Update overkill.ini - add ver 1.10 and 1.11

See merge request !73

M: and P: lines cannot include an address to bind to with ircd.js.

Needed for CIOLIB builds.

3rd party install files for operation: overkill ii

See merge request !72

dpoker needs a little work first (can't find SDL.h).

This was initially just done for lfexpand(), but then I realized there were a
lot of these string processing functions that just checked for VOID
(undefined) argumnet value, but not null.

When a user logins to the FTP server concurrently, this creates a
race condition with an/the other FTP session that may be creating/
downloading a QWK packet. On Vertrauen, this results in the
occasional error removing the file since it was removed unexpectedly:
!ERROR 2 (No such file or directory) in main.cpp line 2747 (event_thread) removing "/sbbs/data/pack1111.now" access=0

xtrn install lore

See merge request !70

Reported by Night Stalker (INTERNAL)
Most likely some unexpected content in sbbsecho.ini.

At the request of WitNik (BGGRSCYN)

For deon's use with Docker:
When creating new nodes (after node 1), derive the new node directory from node 1's configured directory if possible (e.g. it has a '1' in it). So if Node 1's directory is /blah/bbsdir1, then node 2's directory will default to /blah/bbsdir2. When creating node 1 (the first node), it still defaults to "../node1".

(e.g. when run as a timed event) - this bug was introduced in the "Fix sub[] property setter" crash bug fix 2 commits ago.
This fixes the "TypeError: sub.code is undefined" error.

... even when there's no private data.

Should fix "TypeError: sub.code is undefined"

The private data pointer is no longer a subscan_t*. This likely explains the reported crashes when using DDMsgReader and the most recent changes (fixes) to the msg_area object.