[issue20076] Add UTF-8 locale aliases

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

After applying patch from issue20079, pa_pk.utf8, te_in.utf8, and zh_sg.utf8 are eliminated from this patch.

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assignee:  -> serhiy.storchaka

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20076>
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