Add R code for processing Torperf data to the Torperf repository
Torperf writes its output to text files that are quite hard to comprehend and visualize. The completion time needs to be calculated from columns 1, 2, 17, and 18. Also, we only recognize a timeout from the 17th column being 0 and a failure from the 20th column being smaller than the expected data size.
Yes, this is documented somewhere. The measurement HOWTO has some bits of information, and the Overview of Statistical Data in the Tor Network explains it some more.
Still, it's not really intuitive to process Torperf data.
We should take the R code from #2543 (closed) (and possibly other code?), generalize it a bit, document it for R-noobs, and put it in the Torperf repository.