Fix typo's in rdiff.magic.
Fix typo's in rdiff.magic.

librsync/librsync,dbaarda/librsync,sourcefrog/librsync,sourcefrog/librsync,librsync/librsync,dbaarda/librsync,dbaarda/librsync,librsync/librsync,sourcefrog/librsync,sourcefrog/librsync,librsync/librsync,dbaarda/librsync