Display sub-board's internal codes when detecting duplicate ptridx values.

compile AR strings for SCFG).

Created sbbs_t::signal_sub_sem() method to handle creation of global
echomail_sem (for FTN sub-boards) and the sub-boards post_sem (if confiugred).

configuration wizard with blank data).

grp/lib code prefix (helps generate unique internal codes).

module (.js or .bin) files.

Eliminated unused function: readline_alloc().

may be uninitialized or old.

of control key combinations in inkey() via SCFG or script.

toggle options (that don't fit in sys_misc).

Node paths are now statically allocated (for max nodes and max path length) - simplifying configuration code.
Moved for directory creation in make_data_dirs().

this allows the DLL to be used for configuration programs, simplifies scfg_t format and freeing of configuration data.