tool to 'prettify' dmd profiler logs

[Lutger]

Extrawurst wrote:
> just two points:
> 1) ptrace is extremly slow isn't it ? i hope its not just my machine, 
> but for a 1mb trace.log it took minutes to parse.

It's slow, but that's too much. The cause is bad use of regexes, I'll 
fix it.

> 2) could you also include a legend or a table header in the call-graph 
> section to explain the numbers behind every function ?

Sure, I will make some improvements.