Fixed potential NULL pointer de-reference bug (new).
Added support for external address aliases (you@somedomain.com  = sysop) in the alias.cfg file.
Now store original destination address in "name" field of SMB header.

Eliminated redundant BOOL/TRUE/FALSE definition.

Doesn't wait for keystrokes if stdin is not a console, just sleeps forever.
Various signal handlers installed to allow sbbs to clean up itself properly.

Fixed prep_dir() for use on FreeBSD - _fullpath (macro for realpath) initializes the entire MAX_PATH bytes of the destination string.

Removed multiple variable declarations using commas (each var has its own type specified).

This increases the likelyhood of detecting RIPscrip support properly in RIPtel.
Also changed the extra response info delay method (to 1 yield per char rx'd).

recvline method will now truncate \n terminated lines (no \r) correctly.

Added real IP and hostname if different from sender's stated address.

1. was incrementing buffer char pointer even when there was no new data
2. was not releasing time-slices when there was no new data

Move SMB hfield creation for sender name and address to support RFC headers that are missing these fields
(uses reverse-path instead).

Added use of select to receive_thread to solve possible dead-lock during uploads.
Moved periodic transfer progress reports to occur even when no data is transferring.
Changed all byte value printfs to unsigned and all sockets to signed.

If resuming transfer, offset is now shown in progress reports.

Beautified getkey() a little.