wireshark: security bump to version 1.8.11

Fixes CVE-2013-6336, CVE-2013-6337, CVE-2013-6338, CVE-2013-6339,
CVE-2013-6340, CVE-2013-4927, CVE-2013-4929, CVE-2013-4930,
CVE-2013-4931, CVE-2013-4932, CVE-2013-4933, CVE-2013-4934,
CVE-2013-4935, CVE-2013-5718, CVE-2013-5719, CVE-2013-5720,
CVE-2013-5721 and CVE-2013-5722.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>