QQ Transport support

[sander]

Coccinella should detect the QQ Transport of Openfire and make it available for selection in the Add Contact dialog. Relevant XML:

<iq type="result" id="1352" from="qq.computer-van-sander-devrieze.local" <email address hidden>/Coccinella@computer-van-sander-devrieze"><query xmlns="http://jabber.org/protocol/disco#info"><identity category="gateway" type="qq" name="QQ Transport"/><feature var="http://jabber.org/protocol/disco#info"/><feature var="http://jabber.org/protocol/disco#items"/><feature var="jabber:iq:gateway"/><feature var="jabber:iq:register"/><feature var="jabber:iq:version"/><feature var="vcard-temp"/></query></iq>