Please backport clamav 0.98.4+dfsg-2 (main) from utopic

Please backport clamav 0.98.4+dfsg-2 (main) from utopic to trusty.

Reason for the backport:
========================
Testing is sufficient that it should be backported.

Testing:
========
Mark off items in the checklist [X] as you test them, but please leave the checklist so that backporters can quickly evaluate the state of testing.

You can test-build the backport in your PPA with backportpackage:
$ backportpackage -u ppa:<lp username>/<ppa name> -s utopic -d trusty clamav

* trusty:
[x] Package builds without modification
[x] libclamav-dev installs cleanly and runs
[x] clamav-testfiles installs cleanly and runs
[x] clamav-base installs cleanly and runs
[x] clamav installs cleanly and runs
[x] libclamav6 installs cleanly and runs
[x] clamav-dbg installs cleanly and runs
[x] clamav-daemon installs cleanly and runs
[x] clamav-milter installs cleanly and runs
[x] clamav-docs installs cleanly and runs
[x] clamav-freshclam installs cleanly and runs

Reverse dependencies:
=====================
The following reverse-dependencies need to be tested against the new version of clamav. For reverse-build-dependencies (-Indep), please test that the package still builds against the new clamav. For reverse-dependencies, please test that the version of the package currently in the release still works with the new clamav installed. Reverse- Recommends, Suggests, and Enhances don't need to be tested, and are listed for completeness-sake.

libclamav-dev
-------------
* havp
  [x] trusty (Reverse-Build-Depends)
* python-clamav
  [x] trusty (Reverse-Build-Depends)
* dansguardian
  [x] trusty (Reverse-Build-Depends)
* c-icap-modules
  [x] trusty (Reverse-Build-Depends)

clamav-testfiles
----------------

clamav-base
-----------

clamav
------
* clamassassin
  [X] trusty (Reverse-Depends)
* clamav-unofficial-sigs
  [X] trusty (Reverse-Depends)
* dansguardian
  [X] trusty (Reverse-Depends)
* amavisd-new
  [X] trusty (Reverse-Suggests)
* proftpd-mod-clamav
  [X] trusty (Reverse-Depends)
* moodle
  [X] trusty (Reverse-Suggests)
* mediawiki
  [X] trusty (Reverse-Suggests)
* claws-mail-clamd-plugin
  [X] trusty (Reverse-Recommends)
* clamtk
  [X] trusty (Reverse-Depends)
* mimedefang
  [X] trusty (Reverse-Suggests)
* p3scan
  [X] trusty (Reverse-Suggests)
* kmail
  [X] trusty (Reverse-Suggests)
* libc-icap-mod-virus-scan
  [X] trusty (Reverse-Depends)

libclamav6
----------
* libclamunrar6
  [X] trusty (Reverse-Depends)
* havp
  [X] trusty (Reverse-Depends)
* dansguardian
  [X] trusty (Reverse-Depends)
* python-pyclamav
  [X] trusty (Reverse-Depends)

clamav-dbg
----------

clamav-daemon
-------------
* amavisd-new-postfix
  [X] trusty (Reverse-Recommends)
* amavisd-new
  [X] trusty (Reverse-Suggests)
* clamfs
  [X] trusty (Reverse-Recommends)
* linkchecker
  [X] trusty (Reverse-Suggests)
* python-pyclamd
  [X] trusty (Reverse-Depends)
* clamsmtp
  [X] trusty (Reverse-Depends)
* qpsmtpd
  [X] trusty (Reverse-Suggests)
* exim4-daemon-heavy
  [X] trusty (Reverse-Breaks)
* clamav-unofficial-sigs
  [X] trusty (Reverse-Suggests)
* libclamav-client-perl
  [X] trusty (Reverse-Suggests)
* dspam
  [X] trusty (Reverse-Suggests)

clamav-docs
-----------

clamav-milter
-------------

clamav-freshclam
----------------
* havp
  [X] trusty (Reverse-Recommends)
* amavisd-new-postfix
  [X] trusty (Reverse-Recommends)
* dansguardian
  [X] trusty (Reverse-Suggests)
* clamtk
  [X] trusty (Reverse-Depends)
* python-pyclamav
  [X] trusty (Reverse-Depends)