That includes:
o Manpage fixes
o to{lower,upper,whatever} fixes
o strl* use
o use of getopt() in chat(8)
o use of NetBSD's md5 and sha1 APIs
o support for utmp and utmpx
o a slightly different way of handling active and pass filters, to
avoid depend on "inbound" and "outbound" keywords of libpcap
o addition of plug-in hooks for LCP
o use of the former TDB code (ppp-2.4.3 uses a GPL version, which
was removed prior to the import)
o changes in the compressor API.
