Make BufferedChecksumStream classes final
Rename VersionedTranslogStream -> TranslogStream
Rename read/write methods to shorter names
lowercase 'Exception' in Exception message
remove extraneous 'this' statements
Rename TranslogStreamVersion0 -> LegacyTranslogStream
Rename TranslogStreamVersion1 -> ChecksummedTranslogStream
Use try-with-resources for InputStreamDataInput in TranslogStreams