confusing unique file timing results in darshan-parser
These two lines:
unique files: slowest_rank_time: ... unique files: slowest_rank_meta_time: ...
We should double check their meaning and clarify in the output:
- does slowest_rank_time include metadata time (rename it if not)
- did these values come from the same rank?
- what rank was the slowest counting both meta and IO time (which may be different than which was slowest in a single category)