gnu: gmime: Update to 2.6.20.

* gnu/packages/mail.scm (gmime): Update to 2.6.20.
[arguments]: Use modify-phases syntax.

gnu: dovecot: Update to 2.2.19.

* gnu/packages/mail.scm (dovecot): Update to 2.2.19.

gnu: msmtp: Update to 1.6.2.

* gnu/packages/mail.scm (msmtp): Update to 1.6.2.
  [arguments]: Use '--with-tls' configure flag instead of
  '--with-ssl' (deprecated).

gnu: esmtp: Fix 'inputs' field.

This is a followup to commit f8ae32a26a5f41466f5c7792261fdf2e78d1d35f.

* gnu/packages/mail.scm (esmtp)[inputs]: Add missing parentheses.

gnu: Add esmtp.

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

gnu: Add libesmtp.

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

gnu: claws-mail: Update to 3.13.0.

* gnu/packages/mail.scm (claws-mail): Update to 3.13.0.
  [url]: Update to new location.

Merge branch 'dbus-update'

Merge branch 'master' into dbus-update

gnu: Move gdbm to (gnu packages databases).

* gnu/packages/gdbm.scm: Remove.
* gnu/packages/databases.scm (gdbm): New variable, from gdbm.scm.
* gnu/packages/avahi.scm, gnu/packages/cyrus-sasl.scm,
  gnu/packages/guile.scm, gnu/packages/mail.scm,
  gnu/packages/man.scm, gnu/packages/pulseaudio.scm,
  gnu/packages/python.scm, gnu/packages/ruby.scm,
  gnu/packages/sawfish.scm: Adjust accordingly.
* gnu-system.am (GNU_SYSTEM_MODULES): Remove gdbm.scm.

gnu: mu: Adjust to new GLib version.

* gnu/packages/mail.scm (%mu-gtester-patch): New variable.
  (mu)[source]: Use it.

Merge branch 'master' into dbus-update

gnu: mutt: Update to 1.5.24.

* gnu/packages/patches/mutt-CVE-2014-9116.patch: Delete file.
* gnu/packages/mail.scm (mutt): Update to 1.5.24.
  [source]: Update and remove patch.
* gnu-system.am (dist_patch_DATA): Unregister removed patch.

gnu: mu: Update to 0.9.13.

* gnu/packages/mail.scm (mu): Update to 0.9.13.

Merge branch 'master' into core-updates

gnu: Add python2-notmuch.

* gnu/packages/mail.scm (python2-notmuch): New variable.

gnu: notmuch: Update to 0.20.2.

* gnu/packages/mail.scm (notmuch): Update to 0.20.2.  Add python-sphinx native
  input.  Rewrite phases using 'modify-phases' syntax.

gnu: offlineimap: Update to 6.5.7.

* gnu/packages/mail.scm (offlineimap): Update to 6.5.7.

gnu: Move content of openssl module into tls module.

* gnu/packages/openssl.scm (openssl, perl-net-ssleay): Move to...
* gnu/packages/tls.scm: ...here.
* gnu/packages/openssl.scm: Delete file.
* gnu-system.am (GNU_SYSTEM_MODULES): Unregister deleted file.
* gnu/packages/{admin.scm, bittorrent.scm, certs.scm, ci.scm,
  cyrus-sasl.scm, databases.scm, dns.scm, ebook.scm, enlightenment.scm,
  gnunet.scm, libreoffice.scm, links.scm, mail.scm, messaging.scm,
  networking.scm, ntp.scm, openldap.scm, package-management.scm, pdf.scm,
  python.scm, qt.scm, rdesktop.scm, rdf.scm, ruby.scm, ssh.scm,
  synergy.scm, tor.scm, version-control.scm, video.scm, vpn.scm,
  w3m.scm, web.scm, weechat.scm, xiph.scm}: Adapt module import.

gnu: Rename module gnutls to tls.

* gnu/packages/gnutls.scm: Rename to...
* gnu/packages/tls.scm: ... this.  Change module name accordingly.
* gnu/packages/{admin.scm, cups.scm, curl.scm, dc.scm, dns.scm, emacs.scm,
  ftp.scm, gnome.scm, gnunet.scm, gnupg.scm, gsasl.scm, lynx.scm,
  mail.scm, messaging.scm, package-management.scm, shishi.scm,
  task-management.scm, version-control.scm, video.scm, vpn.scm,
  webkit.scm, weechat.scm, wget.scm, wine.scm, xml.scm}: Adapt module
  import to new name.
* gnu-system.am (GNU_SYSTEM_MODULES): Rename gnutls module to tls.