Calculate piece hash when data is arrived if the data is arrived
in
order. This removes additional read operation for hash
calculation.
If the data is arrived in out of order, the hash is calucated
when the
piece is completed. This is the same behavior as the old
implementation.
* src/BtPieceMessage.cc
* src/DefaultBtProgressInfoFile.cc
* src/DefaultPieceStorage.cc
* src/DownloadCommand.cc
* src/DownloadCommand.h
* src/DownloadEngine.cc
* src/GrowSegment.cc
* src/GrowSegment.h
* src/Piece.cc
* src/Piece.h
* src/PiecedSegment.cc
* src/PiecedSegment.h
* src/Segment.h
* test/PieceTest.cc