All other sorting benchmarks use arrays of roughly the same length.
This CL adds a set of benchmarks that sort arrays of various lengths.

Two data configurations are used for each length: Completely random
and already sorted.

R=jgruber@chromium.org

Bug: v8:7382
Change-Id: Ib80a3421a68029c8e4f823605bab7b2d7fe1ae34
Reviewed-on: https://chromium-review.googlesource.com/1109509
Commit-Queue: Simon Zünd <szuend@google.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53917}