Log Message:
Update to version 1.2.1.

Changes:

- Apply NetBSD patch to sysdeputil.c to activate a few features. Thanks to
  Lubomir Sedlacik <salo@netbsd.org>.
- Apply fix for broken clients that terminate commands with \r\r\n. Thanks
  to Andrey Chernomyrdin <andrey@excom.spb.su>.
- AIX send_file support, thanks to Tomas Ogren <stric@ing.umu.se>.
- Fix typos in vsftpd.conf.5, thanks to SEKINE Tatsuo <tsekine@sdri.co.jp>.
- Simple -F flag support to LIST and NLST. Needed for some broken clients.
- Add simple ? wildcard in pattern matching.
- Make pasv_min_port and pasv_max_port work if they are the same value.
  Thanks to Marvin Solomon <solomon@cs.wisc.edu>.
- Paranoia: ignore user_config_dir if username has a / in it.
- Implement stub ALLO command to keep busybox/ftpput happy.
- Implement REIN, ACCT and SMNT stubs.
- Implement FEAT along with an OPTS stub.
- Implement STAT (no-args version).
- Implement STAT (file/dir).
- Add very simple access control via hide_file and deny_file. These should
  NOT be used for securing content as they are very dumb!  Filesystem
  permissions are still the recommended way for securing important content.
- Allow unsetting of string values with option= (i.e. blank).
- Default virtual users to being chroot()'ed to the guest_user's home
  directory, if virtual_use_local_privs is not set.
- Add support for "user_sub_token", where you can set the home directory
  of guest_user to "/home/virtual/$USER", and \ 
"user_sub_token" to "$USER"
  to have a root directory auto generated based on username logging in,
  e.g.  fred logs in and gets chroot()'ed in /home/virtual/fred.
- Fix bug in str_replace_text if replace token matches at end of string.
- Recognize P@SW as PASV; works around an SMC router bug.
- Accept an async ABOR sequence if it arrives via non-urgent data.  Fixes
  issue with Cisco routers. Thanks to Eddie Corns <E.Corns@ed.ac.uk>.
- Implement simple {,} support in pattern matcher (nested not handled).
  Handy to use with hide_file and deny_file options.
- Fix port range with pasv_min_port and pasv_max_port to use the full range
  (the upper limit wasn't being used very often!).
- Activate SO_REUSEADDR on passive listen sockets - makes servers with
  restricted port ranges much more useable!
- Add secure_email_list_enable, to provide simple anonymous password control.
  For some cases, it's better than the hassle of virtual users. Idea thanks
  to Malcolm O'Callaghan, <mjo@stamps.com>.
- Add some FAQ entries.
- Fix issue with failure to call openlog() before using tcp_wrappers. Part
  of RH bugzilla #89765. (The more serious part was fixed with v1.2.0).