Dr. HeapStat vistool should support multiple visualizations simultanenously

_From [derek.br...@gmail.com](https://code.google.com/u/117968039472581148324/) on December 10, 2010 19:52:16_

PR 536428

For Dr. HeapStat alpha we decided to support only one visualization at a time, i.e., postprocess.pl accepts only one client. It can't deal with multiple clients. Users may want to view to sets of heap profile data simultaneously and this prevents it.

Making postprocess.pl support multiple clients will be messy, the simpler approach would be for each postprocess.pl & vistool pair to use a different port. It is highly unlikely that users will want to view more than 10 different visualizations in one shot, so using 10 ports isn't a big deal.

BTW, we don't have component for Dr. HeapStat, so filing under Dr. Memory for now.

_Original issue: http://code.google.com/p/drmemory/issues/detail?id=218_