Tune mjsunit/array-functions-prototype-misc

Again, this brings testing times down quite a bit without losing test
coverage.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/44143003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17403 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Tune mjsunit/compiler/expression-trees.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/43703002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17404 ce2b1a6d-e550-0410-aec6-3dcde31c8c00