Apparent output-buffering issues

[okdana]

Sometimes, usually when checking a very large number of files with many worker threads, you can get weird outputs like this:

...
P 1234:1234 5678:5678 foo/bar/file1.mp3
P 1234:1234 5678:5678 foo/bar/file3.mp3

P 1234:1234 5678:5678 foo/bar/file4.mp3
P 1234:1234 5678:5678 
P 1234:1234 5678:5678 foo/bar/file5.mp3
foo/bar/file2.mp3
...

The extraneous new-line and the split-apart result for file2.mp3 are apparently the result of output-buffering issues. I think just flushing after each result should fix it. The logger should support this