GnuPG 1.4.16 发布，邮件加密工具

GnuPG 1.4.16 发布， 这是一个稳定的安全修复版本，建议 GnuPG versions 1.x 的用户都赶紧升级。

更新内容如下：

* Fixed the RSA Key Extraction via Low-Bandwidth Acoustic
   Cryptanalysis attack as described by Genkin, Shamir, and Tromer.

 * 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.