New Thunderbird address autocomplete example

There is a new Thunderbird contribution on the Mozilla Developer Center that explains how to invoke address autocomplete, searching first local address books and then globally configured LDAP servers. It works with both Thunderbird 2.x (Gecko 1.8) and 3.x (Gecko 1.9). Many thanks to simon.at.orcl!

Contributing to the Mozilla Developer Center is easy. First, get an account. Next, look for questions that need answers on the how-to page. Alternatively, write a larger article on the topic of your choice (such as the new address autocomplete article) or help out with the Thunderbird 3.0 documentation effort.