[issue2377] Replace __import__ w/ importlib.__import__

[Brett Cannon]

Brett Cannon <brett at python.org> added the comment:

I have replied to Antoine's review and so generated a new patch.

At this point my bootstrap_importlib branch is 5% slower in a standard build in the normal_startup benchmark (11% if you use a debug build).

This is still w/o profiling the Python code to look for inefficiencies (of which I'm sure there are some considering how long I have been banging away at this code).

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