Handle all object types (minus smi) in load/store ICs

R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/62953007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17755 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Also support smi in load-ICs.

BUG=
R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/68523009

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17756 ce2b1a6d-e550-0410-aec6-3dcde31c8c00