1autoconf checks:
2	- HAVE_FTP_NAMES if FTP_NAMES et al in <arpa/ftp.h>
3	- replace getopt() if optreset (BSD) or getoptreset() (irix)
4	  is not available?
5	- IF_NAMESIZE not available on darwin
6	- inet_net_pton() ipv6 support
7
8support lfcompile(5) (large files) on solaris
9
10fix internalls (actually fts) on IRIX
11
12enable utmp stuff (need to make it portable)
13
14enable wtmp stuff (need to make it portable)
15
16enable kerberos support once its fixed?
17
18add getenv(3) to replace putenv(3) cruft?
19
20barf if neither flock() nor lockf() is available
21