[Avcheck] Avcheck-0.5 released

[Michael Tokarev]

I finally released avcheck v. 0.5, it is available at
  ftp://ftp.corpit.ru/pub/avcheck/avcheck-0.5.tar.gz

There was many documentation updates, and some little
changes in code.  There was no bugfixes.

Chagelog entries:

2001-10-07  Michael Ju. Tokarev  <mjt@corpit.ru>
    * Added new return code to list of "mail infected" codes from avp,
      and notes in README.AVP about Warning setting.  Bad situation
      when avp found a file that *looks* like infected but in fact
      it isn't -- avcheck complains about unexpected return code
      (noted by Robert Dalton, AccessWest)
    * Always read number of viruses found from DrWeb (stop it from
      complaining about broken pipe)
    * Link with -lnsl only if there is -lsocket (solaris) -- i.e. do
      not use -lnsl on linux or bsd.  Note that I'm not shure about
      bsd here.
2001-09-29  Michael Ju. Tokarev  <mjt@corpit.ru>
    * Added example startup scripts sutable for controlling kavdaemon
      and drwebd.  Those startup scripts should be able to run on almost
      any unix platform.
    * Major documentation change and corrections -- thank you,
      Ralf Hilderbrandt, for this!
    * Added README.DrWeb (how to use avcheck with DrWeb antivirus) --
      pretty the same as README.AVP
    * Added preliminary version of README.Sendmail about how to use
      avcheck with this MTA.  I can't verify information presented in
      this file, since I have no Sendmail around.
    * Allow specifying additional arguments for sendmail program (-S
      option): either by repeating -S several times (cumulative mode)
      or by specifying multiword value for -S (see avcheck.1 for details)
      Note that avcheck now does not add -i option for sendmail, one
      need to specify it in command line explicitly if needed.
    * Do not send sender virus alerts to some special addresses or
      when message headers contains some special values (messages from
      mailing lists, for example).  Suggested and initially implemented
      by Juri Haberland <haberland@altus.de>

No changes that might break compatibility was made, except of:

 - treating -S (sendmail) as "cumulative", multi-word option.  Can
   cause issues only if -S argument was incorrectly specified twice

 - treating code 2 from avp like other infected cases.  Previously,
   when avp returned 2, avcheck defers mail, now it will reject it
   as infected.  Behaviour may be controlled by "Warnings=Yes|No"
   option in avp's defUnix.ini

 - additional handling of bulk/list mail in infected.ex2 template
   script: it will not send mail to sender address if it looks like
   mail comes from mailinglist or the like.   If you'll notice that
   virus alerts not comes to sender address anymore, please look into
   this template script (ex2/template, infected.ex2.LL).

There are some entries in todo list still exists.

Ralf, please note that I changed docs again (and there are some pending
changes too) -- let me know if it is better to send you some diffs or
may be open cvs access.

Regards,
 Michael.