GUTS support optionally can be compiled in.

Add "Safe Mode" by specifying -S on the command line... prevents writing to
any files on the local system as well as preventing any browsing.  File
transfers are disabled.  Only the last connected and connection count are
updated in the BBS list.

Features requested bu obliVi0us who has done extensive testing of the ANSI
output of ciolib.  SyncTERM can now run as a door!  :-)