updated to hadoop-2.0.0-cdh4.2.0
If the auth setting is setting to simple in the hadoop config do not try
to authenticate. If the auth setting is set to kerberos then try and use
kerberos, otherwise raise an error.
updated missing contrib files
added guava dependency for hadoop-2.0.0
updated dependencies for voldemort to match hadoop-2.0.0-cdh4.2.0
recompiled the proto files for protobuf 2.4.0a
updated pb test for protopuf 2.4.0a
uncomment the protobuff target for recompiling the proto files using
protobuf 2.4.0a
updated version number for internal semetric release 1.3.4+sem-03
Merge pull request #4 from mattjeffery/release-1.3.4+sem-03

Release 1.3.4+sem 03