* add connection limits (`limit' keyword in ftpd.conf)
* move initialisation of curclass from parse_conf() to new function
init_curclass()
* implement count_users(), which determines the number of users in a given
class. a file - /var/run/ftpd.pids-<class> - is used to store a list
of pids in use (effectively an array of pid_t's), and its size is reduced
as necessary.
* new % modifiers in format_file:
%c class
%M maximum connection count
%N current connection count
* always end_login()s, even for refused connections
bugs fixed:
* remove \n from %T output
* fix some inconsistencies in the man pages
* ensure that both `ftp' *and* `anonymous' are allowed in ftpusers.
(this was accidently broken in a recent commit to be ``or'' not ``and'')
* use MAXPATHLEN not MAXPATHLEN+1
* crank copyright date on modified files
* crank version
16e886121d