Heap profiling doesn't always require compiling in profiling way

Thank you for the comprehensive section in the book about using eventlog2html to do heap profiling. It's a good resource.

I think it is very import to mention that you do not need to compile in the profiling way to use `-hT` and `-hi` profiling modes.

I do most my profiling using these two modes and it greatly simplifies things not having to use profiled way.