CellVoyagerReader: Source folder should use the absoluteFile method

From Melissa comment #1.
Signed-off-by: Jean-Yves Tinevez <jeanyves.tinevez@gmail.com>
B
B
CellVoyagerReader: use slf4j to log throwable

From Melissa comments #2 to #8
Signed-off-by: Jean-Yves Tinevez <jeanyves.tinevez@gmail.com>
CellVoyagerReader: remove unused methods

From Melissa comment #9 & #10.
Signed-off-by: Jean-Yves Tinevez <jeanyves.tinevez@gmail.com>