Robert Weber submitted changes to make the checksum work on files >512Meg and also to speed up little-endian systems.  I tweaked them a tad and this is the result.
Robert Weber submitted changes to make the checksum work on files >512Meg
and also to speed up little-endian systems.  I tweaked them a tad and this
is the result.

binondord/librsync,binondord/librsync,agrandville/librsync,dbaarda/librsync,potatogim/librsync,VictorDenisov/librsync,agrandville/librsync,sourcefrog/librsync,librsync/librsync,binondord/librsync,yrgoldteeth/librsync,agrandville/librsync,pauloppenheim-liveloop/librsync,pauloppenheim-liveloop/librsync,sourcefrog/librsync,Salamek/librsync,dbaarda/librsync,yrgoldteeth/librsync,VictorDenisov/librsync,dbaarda/librsync,Salamek/librsync,sourcefrog/librsync,dbaarda/librsync,yrgoldteeth/librsync,librsync/librsync,potatogim/librsync,pauloppenheim-liveloop/librsync,pauloppenheim-liveloop/librsync-winbuild,VictorDenisov/librsync,pauloppenheim-liveloop/librsync-winbuild,Salamek/librsync,librsync/librsync,potatogim/librsync,VictorDenisov/librsync,pauloppenheim-liveloop/librsync-winbuild,yrgoldteeth/librsync,sourcefrog/librsync,librsync/librsync