Output from Octo-Tiger goes to stderr and not stdcout

[diehlpk]

Expected Behavior

All octo-Tiger output which is not an error should go to stdcout and not stdcerr.

Actual Behavior

Some of the error gets to stdcerr which is confusing.

For example

cat output8_1920.27061008/1/0/stderr.1.0 shows

Start octotiger
Start processing options
Finished processing options
Finished executor init and read options
Finished initializing options
Finished computing factors
Finished static_init
Finished normalizing
Finished initialization
Finished init
Found root
Starting refinement
---------------Created Level 1---------------

---------------Created Level 2---------------

---------------Created Level 3---------------

---------------Created Level 4---------------

---------------Created Level 5---------------

---------------Created Level 6---------------

---------------Created Level 7---------------

---------------Created Level 8---------------

---------------Re-gridded Level 8---------------

solving gravity------------
...done
Start execution the solver...
Finished solver exeuction - Scenario done!
Start timings report...
Finished timings report!
Start cleanup...