- change the increment used to test various no. of aggregators
to avoid using only power of two numbers
- convert some paratemers in the cost function from integers to
to floats for providing smoother and more consistent results
- set the FVIEW_IS_SET flag on the file *only* if the user
has set anything else than the default file view.
Signed-off-by: Edgar Gabriel <gabriel@cs.uh.edu>