- Table.Grow updates function, signature table sizes
 - Updates generated code with new base addresses for function, signature tables
 - Relocates size references for correct bounds check

R=bradnelson@chromium.org, titzer@chromium.org

Review-Url: https://codereview.chromium.org/2637643002
Cr-Commit-Position: refs/heads/master@{#42349}