Conveniently place trace logging files in the Shumway root directory.

To use, build SpiderMonkey with `--enable-trace-logging` and use it to run Shumway from the command line.

`https://developer.mozilla.org/en-US/docs/Mozilla/Projects/SpiderMonkey/Hacking_Tips`

Add a symlink to the `/tmp` folder in your `traceLogging` folder and direct your browser to:

`http://localhost:8000/traceLogging/tracelogger.html?data=data/tl-data.json`