[$] Python JIT stabilization

On April 11, Brandt Bucher postedPEP 744 ("JIT Compilation"),which summarizes the current state of Python's new copy-and-patch just-in-time (JIT) compiler. The JIT is currentlyexperimental, but the PEP proposes some criteria for the circumstances under which itshould become a non-experimental part of Python.The discussion of the PEP hasn'treached a conclusion, butseveral members of the community have already raised questionsabout how the JIT would fit into future iterations of the Python language.