gnu: notmuch: Update to 0.26.

* gnu/packages/mail.scm (notmuch): Update to 0.26.

gnu: dovecot: Update to 2.3.0.

* gnu/packages/mail.scm (dovecot): Update to 2.3.0.
* gnu/services/mail.scm (dovecot-configuration)[director-doveadm-port]
[ssl-parameters-regenerate]: Delete fields.
[ssl-protocols]: Rename to...
[ssl-min-protocol]: ...this.
[mail-log-prefix, mdbox-rotate-size, ssl-cipher-list, imap-logout-format]:
Update default values.
* doc/guix.texi (Mail Services): Reflect the above changes to the service.

gnu: exim: Update to 4.90.

* gnu/packages/mail.scm (exim): Update to 4.90.

gnu: claws-mail: Update to 3.16.0.

* gnu/packages/mail.scm (claws-mail): Update to 3.16.0.

gnu: mutt: Update to 1.9.2.

* gnu/packages/mail.scm (mutt): Update to 1.9.2.

gnu: notmuch: Move elisp directory and generate autoloads.

* gnu/packages/mail.scm (notmuch)[arguments]: Move elisp files to
share/emacs/site-lisp/guix.d/notmuch-<version>.
Add make-autoloads phase.

gnu: Add afew.

* gnu/packages/mail.scm (afew): New variable.

gnu: notmuch: Update to 0.25.3.

* gnu/packages/mail.scm (notmuch): Update to 0.25.3.

gnu: neomutt: Update to 20171208.

* gnu/packages/mail.scm (neomutt): Update to 20171208.

Signed-off-by: Leo Famulari <leo@famulari.name>

gnu: blists: Update to 2.0.

* gnu/packages/mail.scm (blists): Update to 2.0.

Signed-off-by: Leo Famulari <leo@famulari.name>

gnu: exim: Update to 4.89.1.

* gnu/packages/mail.scm (exim): Update to 4.89.1.
[source]: Remove patches for fixed CVEs (all of them).
* gnu/packages/patches/exim-CVE-2017-16943.patch: Delete file...
* gnu/packages/patches/exim-CVE-2017-16944.patch: ...as well as this file...
* gnu/packages/patches/exim-CVE-2017-1000369.patch: ...and this file.
* gnu/local.mk (dist_patch_DATA): Remove all of them.

gnu: exim: Fix CVE-2017-16944.

* gnu/packages/patches/exim-CVE-2017-16944.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/mail.scm (exim)[source]: Use it.

gnu: exim: Fix CVE-2017-16943.

* gnu/packages/patches/exim-CVE-2017-16943.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/mail.scm (exim)[source]: Use it.

gnu: mail: Remove python-django-mailman3.

This package fails to build, as django-mailman3 currently only works with
Python 2.

* gnu/packages/mail.scm (python-django-mailman3): Removed variable.
  (python2-django-mailman3): Inline the use of python-django-mailman3, and
  remove the use of package-with-python2.

gnu: procmail: Fix CVE-2017-16844.

* gnu/packages/patches/procmail-CVE-2017-16844.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/mail.scm (procmail)[source]: Use it.

gnu: Move date/time packages from python.scm to time.scm.

* gnu/packages/python.scm (python-pytz, python2-pytz, python-dateutil,
python2-dateutil, python-parsedatetime, python2-parsedatetime,
python-tzlocal, python-isodate, python2-isodate, python-iso8601,
python2-iso8601, python-monotonic, python2-monotonic, python-pyrfc3339,
python2-pyrfc3339, python-arrow, python2-arrow, python-aniso8601,
python2-aniso8601): Move from here...
* gnu/packages/time.scm: ...to here.
* gnu/packages/calendar.scm,
gnu/packages/check.scm,
gnu/packages/django.scm,
gnu/packages/ebook.scm,
gnu/packages/gnome.scm,
gnu/packages/irc.scm,
gnu/packages/jrnl.scm,
gnu/packages/mail.scm,
gnu/packages/openstack.scm,
gnu/packages/package-management.scm,
gnu/packages/python-crypto.scm,
gnu/packages/python-web.scm,
gnu/packages/rdf.scm,
gnu/packages/statistics.scm,
gnu/packages/tls.scm,
gnu/packages/tryton.scm,
gnu/packages/version-control.scm: Adjust accordingly.

gnu: Move testing packages from python.scm to check.scm.

* gnu/packages/python.scm (python-behave-web-api, python2-behave-web-api,
python-mock, python2-mock, python-mock-2, python-nose, python2-nose,
python-nose2, python2-nose2, python-unittest2, python2-unittest2,
python-pytest, python2-pytest, python-pytest-3.0, python2-pytest-3.0,
python-pytest-cov, python2-pytest-cov, python-pytest-runner,
python2-pytest-runner, python-pytest-mock, python2-pytest-mock,
python-pytest-xdist, python2-pytest-xdist, python-scripttest,
python2-scripttest, python-testtools, python2-testtools, python-testscenarios,
python2-testscenarios, python-testresources, python2-testresources,
python-subunit, python2-subunit, python-fixtures, python2-fixtures,
python-testrepository, python2-testrepository, python-coverage,
python2-coverage, python-cov-core, python2-cov-core, python-testpath,
python2-testpath, python-testlib, python2-testlib, python-pytest-cache,
python2-pytest-cache, python-pytest-localserver, python-pytest-xprocess,
python-pytest-subtesthack, python2-pytest-subtesthack, python-hypothesis,
python2-hypothesis, python-lit, python2-lit, python-pytest-pep8,
python2-pytest-pep8, python-pytest-flakes, python2-pytest-flakes,
python2-coverage-test-runner, python-pylint, python2-pylint,
python-paramunittest, python2-python-paramunittest, python-pytest-warnings,
python2-pytest-warnings, python-pytest-capturelog, python2-pytest-capturelog,
python-pytest-catchlog, python2-pytest-catchlog, python-nosexcover,
python2-nosexcover, python-discover, python2-discover, behave, python-rednose,
python2-rednose, python-nose-randomly, python2-nose-randomly,
python-nose-timer, python2-nose-timer): Move from here...
* gnu/packages/check.scm: ...to here.
* gnu/packages/admin.scm,
gnu/packages/android.scm,
gnu/packages/backup.scm,
gnu/packages/bioinformatics.scm,
gnu/packages/calendar.scm,
gnu/packages/dav.scm,
gnu/packages/django.scm,
gnu/packages/freedesktop.scm,
gnu/packages/haskell.scm,
gnu/packages/image.scm,
gnu/packages/irc.scm,
gnu/packages/jrnl.scm,
gnu/packages/ldc.scm,
gnu/packages/libffi.scm,
gnu/packages/mail.scm,
gnu/packages/mpd.scm,
gnu/packages/openstack.scm,
gnu/packages/package-management.scm,
gnu/packages/password-utils.scm,
gnu/packages/python-crypto.scm,
gnu/packages/python-web.scm,
gnu/packages/rdf.scm,
gnu/packages/statistics.scm,
gnu/packages/storage.scm,
gnu/packages/time.scm,
gnu/packages/tls.scm,
gnu/packages/tor.scm,
gnu/packages/tryton.scm: Adjust accordingly.

gnu: exim: Use HTTPS for home page.

* gnu/packages/mail.scm (exim)[home-page]: Use HTTPS.

gnu: Move web packages from python to python-web.

This is in part to address <https://bugs.gnu.org/27284>.

* gnu/packages/python.scm (python-httplib2, python2-httplib2)
(python-sockjs-tornado, python2-sockjs-tornado)
(python-flask-babel, python2-flask-babel)
(python-html5lib, python2-html5lib)
(python-html5lib-0.9, python2-html5lib-0.9)
(python-html5-parser, python2-html5-parser)
(python-webencodings, python2-webencodings)
(python-openid, python2-openid, python-cssutils, python2-cssutils)
(python-cssselect, python2-cssutils)
(python-openid-cla, python2-openid-cla)
(python-openid-teams, python2-openid-teams)
(python-tornado, python2-tornado)
(python-tornado-http-auth, python-terminado, python2-terminado)
(python-webob, python2-webob, python-zope-event, python2-zope-event)
(python-zope-interface, python2-zope-interface)
(python-zope-exceptions, python2-zope-exceptions)
(python-zope-testing, python2-zope-testing)
(python-zope-testrunner, python2-zope-testrunner)
(python-zope-i18nmessageid, python2-zope-i18nmessageid)
(python-zope-schema, python2-zope-schema)
(python-zope-configuration, python2-zope-configuration)
(python-zope-proxy, python2-zope-proxy)
(python-zope-location, python2-zope-location)
(python-zope-security, python2-zope-security)
(python-zope-component, python2-zope-component)
(python-ndg-httpsclient, python2-ndg-httpsclient)
(python-websocket-client, python2-websocket-client)
(python-requests-toolbelt, python2-requests-toolbelt)
(python-rauth, python2-rauth, python-urllib3, python2-urllib3)
(awscli, python-wsgiproxy2, python2-wsgiproxy2)
(python-pastedeploy, python2-pastedeploy)
(python-webtest, python2-webtest, python-flask, python2-flask)
(python-flast-wtf, python2-flask-wtf)
(python-flask-multistatic, python2-flask-multistatic)
(python-cookies, python2-cookies)
(python-responses, python2-responses)
(python-geventhttpclient, python2-geventhttpclient)
(python-requests-oauthlib, python2-requests-oauthlib)
(python-url, python2-url, python-cachecontrol, python2-cachecontrol)
(python-betamax, python2-betamax)
(python-betamax-matchers, python2-betamax-matchers)
(python-s3transfer, python2-s3transfer)
(python-flask-restful, python-flask-basicauth)
(python-flask-sqlalchemy, python-flask-restplus)
(python-flask-restful-swagger, python-htmlmin, python2-htmlmin)
(python-flask-htmlmin, python2-flask-htmlmin)
(python-flask-login, python2-flask-login)
(python-oauth2client, python-flask-oidc)
(python-webassets, python-cssmin, python2-cssmin)
(python-elasticsearch, python2-elasticsearch)
(python-flask-script, python2-flask-script)
(python-flask-migrate, python2-flask-migrate)
(python-genshi, python2-genshi)
(python-flask-principal, python2-flask-principal)
(python-flask-httpauth, python2-flask-httpauth)
(python-uritemplate, python2-uritemplate): Move to...
* gnu/packages/python-web.scm: ... here.  New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.
* gnu/packages/admin.scm, gnu/packages/backup.scm,
gnu/packages/dav.scm, gnu/packages/django.scm,
gnu/packages/docker.scm, gnu/packages/ebook.scm,
gnu/packages/logging.scm, gnu/packages/mail.scm,
gnu/packages/music.scm, gnu/packages/openstack.scm,
gnu/packages/package-management.scm, gnu/packages/rdf.scm,
gnu/packages/tls.scm, gnu/packages/tor.scm,
gnu/packages/tryton.scm, gnu/packages/version-control.scm,
gnu/packages/web-browsers.scm,
gnu/packages/web.scm: Adjust accordingly.

gnu: mailutils: Update to 3.4.

* gnu/packages/mail.scm (mailutils): Update to 3.4.