[issue13477] tarfile module should have a command line

[Berker Peksag]

Berker Peksag added the comment:

Thanks for the rebase, Antoine.

Here is an updated patch:

- Adressed Serhiy's comments. I didn't add a directory parameter to the
  create command to keep the CLI simple.
- Added a test for dotless files
- Returned proper exit codes

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components: +Library (Lib)
Added file: http://bugs.python.org/file31879/issue13477_v5.diff

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