This widens the set of binary operator reductions that are applied by
TurboFan when graphs are built from bytecode. By now we only insert
number conversions to inputs of integer binary ops (i.e. bitwise and
shifts), others no longer require a "before" frame state input.

R=bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/2135973003
Cr-Commit-Position: refs/heads/master@{#37674}