Log Message:
Update to 1.4.16:

Noteworthy changes in version 1.4.16 (2013-12-18)
-------------------------------------------------

 * Fixed the RSA Key Extraction via Low-Bandwidth Acoustic
   Cryptanalysis attack as described by Genkin, Shamir, and Tromer.
   See <http://www.cs.tau.ac.il/~tromer/acoustic/>.  [CVE-2013-4576]

 * Put only the major version number by default into armored output.

 * Do not create a trustdb file if --trust-model=always is used.

 * Print the keyid for key packets with --list-packets.

 * Changed modular exponentiation algorithm to recover from a small
   performance loss due to a change in 1.4.14.