[issue15627] Add a method to importlib.abc.SourceLoader for converting source to a code object

[Brett Cannon]

Changes by Brett Cannon <brett at python.org>:


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dependencies:  -Document the 'optimize' argument to compile()
resolution:  -> fixed
status: open -> closed

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue15627>
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