add sAuthzid to XmppConnection
add sAuthzid to XmppConnection more work on sasl infrastructure
move more stuff from DigestMd5 to Common
more work on sasl infrastructure
Renamed SASLError to SaslError
added BufferedSource
Changed sources to be buffered
reader now only reads the connection state in the beginning, doesn't need to put anything back
Updated test client
renamed picklers to adhere to the xpPicklername schema
added xmpp stream error data type and pickler
changed fatal errors throw exceptions rather than ErrorT errors
renamed pulls to pullSink
renamed pullE pullElement
renamed pull to pullStanza
renamed sendS to sendStanza