Fix: Need to remove function type feedback between stress stages in
release build

BUG=
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/20987005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15933 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix IsDeletable() for HStringAdd, HStringCharCodeAt, HStringCharFromCode.

BUG=
R=mstarzinger@chromium.org, svenpanne@chromium.org

Review URL: https://codereview.chromium.org/20241005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15934 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Added unit tests for the slightly confusing Boolean/BooleanObject API.

Just for documenting the status quo. As discussed offline, we should
probably rename/deprecate a few things:

  NumberObject::NumberValue() => NumberObject::ValueOf()
  BooleanObject::BooleanValue() => BooleanObject::ValueOf()
  StringObject::StringValue => StringObject::ValueOf()

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/21013003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15935 ce2b1a6d-e550-0410-aec6-3dcde31c8c00