Fixed average time by propagating iteration counter to SION output.

Goal: Fix the incorrect average time that is saved in SION files. It needs to be deleted by cl->size()*iter. For this iter need to be propagated to sion_output.cc via benchmark.cc and the various versions of vcluster.cc.

Also corrects the average all-to-all time, which needs to be divided by two.

This updates the output so an increment in the patch level is needed.