Fix test harness to accept camel-case modes.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/12026018

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@13428 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Remove redundant check in LCodeGen::DoBoundsCheck

R=verwaest@chromium.org

Review URL: https://chromiumcodereview.appspot.com/12026014

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@13429 ce2b1a6d-e550-0410-aec6-3dcde31c8c00