Logged In: YES 
user_id=33168

v2 attached.  You might not want to review yet.  I mostly
did the first part of your suggest (stats, _Fini, and
stack-like if I understood you correctly).  I didn't do
anything on the second part about inlinting Function_Call.

perf seems to be about the same.  I'm not entirely sure the
patch is correct yet. I found one or two problems in the
original.  I added some more comments.