ARROW-13295: [C++] add hash_mean, hash_variance, hash_stddev kernels - #10792

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lidavidm wants to merge 7 commits into

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lidavidm:arrow-13295

Commits on Jul 27, 2021

ARROW-13295: [C++] add hash_mean, hash_variance, hash_stddev kernels
lidavidm
committed
565c88e
ARROW-13295: [C++] Avoid redefining enum
lidavidm
committed
0f23df9
ARROW-13295: [C++] Fix some casts, use ApproxEquals
lidavidm
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1c53cd9
ARROW-13295: [C++] More ApproxEquals
lidavidm
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44403a0
ARROW-13295: [C++] Improve tests, comments, cast
lidavidm
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98b004e
ARROW-13295: [C++] Try to share math between scalar/hash variance kernels
lidavidm
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df99462
ARROW-13295: [C++] Add missing pragma
lidavidm
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90c91fa