* Fix memory leaks caused by thread local
data being lost.
* Rename some instance variables and
accessors to fit code style.
* Don't overwrite existing thread ID.
Fix unused variable warning in
Stop "cooking" targets of jumps and
calls in code objects. Do not convert
jump and call targets to absolute
pointers to Code objects during GC,
heap verification, and serialization.
Don't convert jump and call targets to
code object pointers when