JumpPatchSites can/should easily deal with uint8 sized offsets.

Motivation is that x64 nosnapshot builds need a 129 byte delta at the moment.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/237673007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20776 ce2b1a6d-e550-0410-aec6-3dcde31c8c00