[prog_trace] Add script to generate progress traces for all runs in a directory.
[prog_trace] Add script to generate progress traces for all runs in a directory.

mit-carbon/Graphite-Cycle-Level,8l/Graphite,mit-carbon/Graphite,mit-carbon/Graphite-Cycle-Level,victorisildur/Graphite,victorisildur/Graphite,8l/Graphite,nkawahara/Graphite,mit-carbon/Graphite-Cycle-Level,victorisildur/Graphite,8l/Graphite,fhijaz/Graphite,fhijaz/Graphite,nkawahara/Graphite,mit-carbon/Graphite,fhijaz/Graphite,mit-carbon/Graphite-Cycle-Level,nkawahara/Graphite,mit-carbon/Graphite,fhijaz/Graphite,mit-carbon/Graphite,nkawahara/Graphite,8l/Graphite,victorisildur/Graphite