Fix pre-parsing of 'use strict' directive after string literals.

R=ulan@chromium.org
TEST=mjsunit/regress/regress-parse-use-strict

Review URL: https://codereview.chromium.org/27025002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17164 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Remove BaseLoad/StoreStub compilers, and the stub-cache interface duplication.

R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/26873002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17165 ce2b1a6d-e550-0410-aec6-3dcde31c8c00