delete unused variable


git-svn-id: http://protobuf.googlecode.com/svn@532 630680e5-0e50-0410-840e-4b1c322b438d
Add iostream in message.cc. Remove unused in coded_stream_unittest.cc


git-svn-id: http://protobuf.googlecode.com/svn@533 630680e5-0e50-0410-840e-4b1c322b438d
add LazyFieldLite.java


git-svn-id: http://protobuf.googlecode.com/svn@534 630680e5-0e50-0410-840e-4b1c322b438d