Queue cleanup

[Paul Rubin]

Lawrence D'Oliveiro <ldo at geek-central.gen.new_zealand> writes:
> Meanwhile, real-world programmers get on to writing real-world code that is 
> productive and efficient on real-world systems.

It's pretty well established by now that GC doesn't have any significant
speed penalty compared with manual allocation.  It does consume more
memory, which is acceptable a lot of the time.  It certainly leads to
more reliable programs.