implement Packed64.getBulk()
fix index out of bound issue
implement Lucene41PostingsWriter.finishTerm()
remove unnecessary cast
implement Builder.add()
implement ByteSequenceOutputs.Common()
implement ByteSequenceOutputs.Subtract()
implement UnCompiledNode.prependOutput()
implement ByteArrayDataOutput stub; implement FST.addNode()
implement BytesStore.skipBytes()
implement BytesStore.copyBytesInside()
implement BytesStore.writeBytesAt(0)
implement Lucene41PostingsWriter.addPosition()