Darshan and recorder workloads have temporary debug parameters that
are no longer used and can be removed.

The darshan workload generator now checks that the log version
is at least 2.03. This is due to a bug with how timestamps are
reported in prior versions.

Workload API now defines a function for retrieving the rank count
of a workload. Currently, only darshan workload implements this.
Will work on bgp workload and recorder later.

updates to i/o lang: modifying i/o lang-codes workload API to return correct offsets according to the ranks

Add code sent to me from Babak @ UIUC for generating events from
their I/O trace recorder.

Now, there is logic for generating collective/indpendent i/o events
from darshan logs. There are a couple minor timing and i/o parameter
bugs that still need to be worked out.

Update the darshan workload generator to use new collective open/close
generation algorithm. Previously, generating these operations was
done sequentially on one process, so the algorithm has to be updated
to give consistent results in a distributed environment.