Log Message:
Update to 2.1.10

Changelog:
Noteworthy changes in version 2.1.10 (2015-12-04)
-------------------------------------------------

 * gpg: New trust models "tofu" and "tofu+pgp".

 * gpg: New command --tofu-policy.  New options --tofu-default-policy
   and --tofu-db-format.

 * gpg: New option --weak-digest to specify hash algorithms which
   should be considered weak.

 * gpg: Allow the use of multiple --default-key options; take the last
   available key.

 * gpg: New option --encrypt-to-default-key.

 * gpg: New option --unwrap to only strip the encryption layer.

 * gpg: New option --only-sign-text-ids to exclude photo IDs from key
   signing.

 * gpg: Check for ambigious or non-matching key specification in the
   config file or given to --encrypt-to.

 * gpg: Show the used card reader with --card-status.

 * gpg: Print export statistics and an EXPORTED status line.

 * gpg: Allow selecting subkeys by keyid in --edit-key.

 * gpg: Allow updating the expiration time of multiple subkeys at
   once.

 * dirmngr: New option --use-tor.  For full support this requires
   libassuan version 2.4.2 and a patched version of libadns
   (e.g. adns-1.4-g10-7 as used by the standard Windows installer).

 * dirmngr: New option --nameserver to specify the nameserver used in
   Tor mode.

 * dirmngr: Keyservers may again be specified by IP address.

 * dirmngr: Fixed problems in resolving keyserver pools.

 * dirmngr: Fixed handling of premature termination of TLS streams so
   that large numbers of keys can be refreshed via hkps.

 * gpg: Fixed a regression in --locate-key [since 2.1.9].

 * gpg: Fixed another bug for keyrings with legacy keys.

 * gpgsm: Allow combinations of usage flags in --gen-key.

 * Make tilde expansion work with most options.

 * Many other cleanups and bug fixes.