chroot specify dir to chroot to for GUEST and CHROOT users, to
override -a anondir or the user's homedir.
homedir specify dir to change to upon login; also used for ~ expansion
and $HOME for subprocesses)
both of these can take % escapes: %u (username), %d (homedir), %c (class).
* fix NLST to take a pathname not a STRING, so that ~ expansion works
* modify CWD to use the homedir parsed from curclass.homedir
* implement format_path(dst, src), to parse src expanding % escapes (see above)
into dst.
* rename format_file() to display_file()
* use .Dv and .Tn in the man pages as appropriate
* KNF a bit
The following were inspired by similar changes in openbsd, but may
have additional improvements by me:
* add more check_login tests to the parser rules
* nuke a few memory leaks in the parser rules
* clear passwords before free()ing them, for safety
* don't display \r\n in setproctitle() output
* add support for -U, which enables managing /var/run/utmp entries for
connections. solves [bin/2217] by Jason Downs <downsj@teeny.org>
* fix oob handling for STAT command
* use SIG_ERR instead of -1
lukem