rework tests, paralellization is possible now

Signed-off-by: BlackEagle <ike.devolder@gmail.com>
add test8 :: assure par2 files contain relative paths

Signed-off-by: BlackEagle <ike.devolder@gmail.com>
fix test5 logging

Signed-off-by: BlackEagle <ike.devolder@gmail.com>
test9 :: test rename of wrongly named file

Signed-off-by: BlackEagle <ike.devolder@gmail.com>