Do not use a statement expression in array_length, so that
array_length can be used at file scope and as a constant expression.
Instead, put the _Static_assert into a struct (as a declaration),
and nest this in the expression using a sizeof expression.

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	* locale/programs/charmap-kw.h: Regenerated.
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	* locale/programs/charmap-kw.h: Regenerated.
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