Traditionally, we had a prefix for a function name of "~" for
unoptimized code and "*" for optimized code. Restore this prefix
in v8/tools/ic-processor. It's really cool to know if an IC was
called from optimized code (often a hint of poor performance!).

NOTRY=true
R=cbruni@chromium.org

Review-Url: https://codereview.chromium.org/2835923004
Cr-Commit-Position: refs/heads/master@{#44846}