[PATCH] Improve profiling doc and make the data easier to visualise

[Ian Clatworthy]

Aaron Bentley wrote:

> I have made an LSProf feature, updated the new tests, and changed the
> old tests so that they require the feature instead of skipping.
> 
> I have also updated the global options text and submitted to PQM
> 
> Aaron

Thanks a heap. That work was on my list for today.

Ian C.