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.

Addresses issue #350.

Also fixed up the alignment of the header/columns.

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

This macro has expanded to nothing for a while now and even before, the usage was misguided and unnecessary as explained in this video: https://www.youtube.com/watch?v=cjotPqQxxAY

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...

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

The default terminal columns (still 0/auto) can be overridden with the 'L' command from the user defaults menu. 

Also increased maximum manual terminal rows setting from 99 to 999 - this involved moving the record in user.dat, though the old record value is auto-migrated.

Don't re-read the configuration - we already have it in memory, just pass it
by reference to createdefaults(), so we don't need the SBBSCTRL environment
variable (again). As reported by Michael Long via alt.bbs.synchronet.

Also addressed the truncation of the new user chat handle as reported by GCC.

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).

non-deleted and active user records.
Renamed the old "User List" menu option: "List All User Records"
The online help probably needs fixing now: TODO

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).

field.

You'll need to perform a clean rebuild.

you run uedit and don't have access to the user.dat file, it will report
an error rather than displaying a user with uninitialized values.

uedit.c:1475:5: warning: this 'if' clause does not guard...
     if(uifc.changes)

Created 'install' and 'symlinks' targets to ease the copying (install) or creating of symlinks after build, requires SBBSEXEC env var