Add 8/16-bit integer support to SimpleAtoi #1762
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The current check fails for narrow types (e.g. uint16_t) because of integer promotion. This change fixes the check for more types.
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This makes
SimpleAtoimore ergonomic for tasks like parsing port numbers. These changes were mostly trivial copies of existing code paths. Two spots worth looking more closely at are:kIsSigned) which didn't work properly for these new narrower types, and has been updated.kUse64BitvskIntTypeSize).A bit of previous discussion was here. Even if these changes aren't merged via this PR, I'd love for this to expedite the process of getting them made internally.