deprecated delete and manual memory management

[Timon Gehr]

Steven Schveighoffer wrote:
> Yes, the allocation and free performance could be improved, but it doesn't
> change the fact that delete manually is not a huge performance gain, if at
> all.

My benchmark shows that in the current implementation manual deletion of GC memory
is at least 15 times faster than leaving it up to the GC. (better cache behavior
of the data unmeasured)

> If you want to gain performance, don't use the GC at all (for
> example scope classes), or use a custom allocator that is tailored to your
> needs.

Agreed. But writing a very well performing custom allocator that scales well with
the application is a not-exactly-trivial task.