o turned off preauth flag by default
o modified getTgt() to try two times while getting a TGT
o getTgt() now gets the etypes from the KrbError received from the server
o made the use of useUdp flag consistent
o added utility methods to parse EtypeInfo and EtypeInfo2 structures


git-svn-id: https://svn.apache.org/repos/asf/directory/apacheds/trunk@1468781 13f79535-47bb-0310-9956-ffa450edef68