status()
  This interscanner can be used to collect some other statistics.
  
  Usage: status("String", scanner1(), scanner2(), ...)
  
  Where: "String" is a string, which defines a prefix for status update
           This scring can't contain spaces.
           These string will be replaced:
             %(VIRNAME)s        virus name
             %(LEVEL)s          detected level as float
             %(STARS)s          detected level as stars
         scanner1(), ... are sagator's scanners
  
  Preffered usage:
    SCANNERS = [
      status("Virus", virus_scanner1(), ...),
      status("Spam", spam_scanner1(), ...)
    ]
  This collects Virus-count, Virus-bytes, Spam-count, Spam-bytes in collector.