wireshark: additional dependencies

Wireshark without d-bus results in Wireshark demanding it and will crash on capture. There’s a bug report at seclists here: http://seclists.org/wireshark/2014/Apr/146 - That remains an issue with the latest release as well. Without d-bus, wireshark is not happy.

When building with GTK+3, unless you have ``` gnome-icon-theme ``` installed you'll get [this](https://gist.github.com/DomT4/92c674262d769ffa45be) and Wireshark's interface doesn't load properly:

![screen shot 2014-11-27 at 02 17 28](https://cloud.githubusercontent.com/assets/6998367/5211499/a80bfb00-75db-11e4-9087-83d234163361.png)