of the range of proper JS objects.

Unfortunately, callable types no longer form a range now. However, there
are only two anyway. We put them at either end of the range of JS object
types so that certain compares can be combined.

R=erik.corry@gmail.com,kmillikin@chromium.org
BUG=
TEST=

Review URL: http://codereview.chromium.org/7737036

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9370 ce2b1a6d-e550-0410-aec6-3dcde31c8c00