QXmpp 0.9.0

• Fix phone numbers incorrectly read from / written to vCard as "PHONE" element instead of "TEL" (#65).
• Make QXmppClient::connectToServer(QXmppConfiguration, QXmppPresence) a slot (#63).
• Correctly receive data immediately following a SOCKS5 message (#64).
• Make QXmppStream handle end of incoming stream (#70).
• Add unit tests for QXmppCallManager and QXmppTransferManager.
• Improve ICE implementation to follow RFC 5245 more closely and hide implementation details from public API.