Add a deminimus parameter to process_file
	and suppress the output of states with a lower occpancy
	suppress output of tributaries with less than 1 weighted FIT

Signed-off-by: Mark Kampe <markk@Gevurah.(none)>
print states and classes in descending occupancy order

Signed-off-by: Mark Kampe <markk@Gevurah.(none)>
Add support for per-state performance
	and then compute occupancy weighted performance

Signed-off-by: Mark Kampe <markk@Gevurah.(none)>