Revert "Some code cleanup, esp. includes and copyright headers."

This reverts commit r20938 for breaking the windows build.

TBR=ulan@chromium.org

Review URL: https://codereview.chromium.org/254463003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20939 ce2b1a6d-e550-0410-aec6-3dcde31c8c00