[issue1970] Speedup unicode whitespace and linebreak detection

[Christian Heimes]

Christian Heimes added the comment:

> Please make those stables static... 
> 
> In general, everything that's not needed outside an object file should
> be made static to avoid naming conflicts. For static symbols, there's no
> need to prefix them with any "Py" indicator.

The ascii whitespace table is required for Py_UNICODE_ISSPACE. I can
make the linebreak table static but I can't make the whitespace table
static.

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<http://bugs.python.org/issue1970>
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