Update gnupg21 to 2.1.11:

Noteworthy changes in version 2.1.11 (2016-01-26)
-------------------------------------------------

* gpg: New command --export-ssh-key to replace the gpgkey2ssh tool.

* gpg: Allow to generate mail address only keys with --gen-key.

* gpg: "--list-options show-usage" is now the default.

* gpg: Make lookup of DNS CERT records holding an URL work.

* gpg: Emit PROGRESS status lines during key generation.

* gpg: Don't check for ambigious or non-matching key specification in
  the config file or given to --encrypt-to.  This feature will return
  in 2.3.x.

* gpg: Lock keybox files while updating them.

* gpg: Solve rare error on Windows during keyring and Keybox updates.

* gpg: Fix possible keyring corruption. (bug#2193)

* gpg: Fix regression of "bkuptocard" sub-command in --edit-key and
  remove "checkbkupkey" sub-command introduced with 2.1.  (bug#2169)

* gpg: Fix internal error in gpgv when using default keyid-format.

* gpg: Fix --auto-key-retrieve to work with dirmngr.conf configured
  keyservers. (bug#2147).

* agent: New option --pinentry-timeout.

* scd: Improve unplugging of USB readers under Windows.

* scd: Fix regression for generating RSA keys on card.

* dirmmgr: All configured keyservers are now searched.

* dirmngr: Install CA certificate for hkps.pool.sks-keyservers.net.
  Use this certiticate even if --hkp-cacert is not used.

* gpgtar: Add actual encryption code.  gpgtar does now fully replace
  gpg-zip.

* gpgtar: Fix filename encoding problem on Windows.

* Print a warning if a GnuPG component is using an older version of
  gpg-agent, dirmngr, or scdaemon.

(wiz)