Log Message:
ClamAV 0.99 contains major new features and changes. YARA rules,
Perl Compatible Regular Expressions, revamped on-access scanning
for Linux, and other new features join the many great features of ClamAV:

    - Processing of YARA rules(some limitations- see signatures.pdf).
    - Support in ClamAV logical signatures for many of the features
      added for YARA, such as Perl Compatible Regular Expressions,
      alternate strings, and YARA string attributes. See signatures.pdf
      for full details.
    - New and improved on-access scanning for Linux. See the recent blog
      post and clamdoc.pdf for details on the new on-access capabilities.
    - A new ClamAV API callback function that is invoked when a virus
      is found. This is intended primarily for applications running in
      all-match mode. Any applications using all-match mode must use
      the new callback function to record and report detected viruses.
    - Configurable default password list to attempt zip file decryption.
    - TIFF file support.
    - Upgrade Windows pthread library to 2.9.1.
    - A new signature target type for designating signatures to run
      against files with unknown file types.
    - Improved fidelity of the "data loss prevention" heuristic
      algorithm. Code supplied by Bill Parker.
    - Support for LZMA decompression within Adobe Flash files.
    - Support for MSO attachments within Microsoft Office 2003 XML files.
    - A new sigtool option(--ascii-normalize) allowing signature authors
      to more easily generate normalized versions of ascii files.
    - Windows installation directories changed from \Program Files\Sourcefire\
      ClamAV to \Program Files\ClamAV or \Program Files\ClamAV-x64.