Pass frame header also to frameFinished().

Pass frame header also to frameFinished().

Frame header information is now passed also to frameFinished() in
AnalysisDataModuleInterface in addition to frameStarted().  Currently,
this information is not used anywhere, but it makes the interface more
symmetric, and allows frameFinished() to easily determine the frame
index of the frame that became ready.  The latter will be used in future
commits.

Related to issue #827.

Change-Id: I8a3635823e2d9d6422d2a37ab4b8ec6b606589a0