autoconf checks:
	- HAVE_FTP_NAMES if FTP_NAMES et al in <arpa/ftp.h>
	- replace getopt() if optreset (BSD) or getoptreset() (irix)
	  is not available?
	- IF_NAMESIZE not available on darwin

fix internalls (actually fts) on IRIX

enable utmp stuff (need to make it portable)

enable wtmp stuff (need to make it portable)

enable kerberos support once its fixed?

add getenv(3) to replace putenv(3) cruft?

barf if neither flock() nor lockf() is available
