Rollback of r11638, r11636 on trunk branch.

This reverts the following commits:

Fix build and test failures from packed array optimizations. (r11638)

Implement tracking and optimizations of packed arrays (r11636)

R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10442015

git-svn-id: http://v8.googlecode.com/svn/trunk@11657 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
90 files changed