[issue19512] Avoid most calls to PyUnicode_DecodeUTF8Stateful() in Python interactive mode

[STINNER Victor]

STINNER Victor added the comment:

pysys_getobjectid.patch:

- add _PySys_GetObjectId() and _PyDict_GetItemId() functions
- add global identifiers for most common strings: "argv", "path", "stdin", "stdout", "stderr"
- use these new functions and identifiers

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keywords: +patch
Added file: http://bugs.python.org/file32517/pysys_getobjectid.patch

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