Macpython 32 bit build fixup

[TomAugspurger]

Closes #34114

cc @jbrockmendel and @WillAyd. I have no idea if this is correct, but it builds.

[TomAugspurger]

I looked briefly at adding these builds to our CI, but didn't make any progress. I think it comes down to including a

container: quay.io/pypa/manylinux1_i686:latest

At the same level as job and pool in the yaml file.

[jbrockmendel]

the tokenizer.c edit looks good and the period.pyx edit looks harmless.

But Py_ssize_t -> khiter_t looks sketchy in a subset of the places the change is made; ill comment in-line.

[jbrockmendel]

I'm OK with merging this as-is if this is a blocker for wheel building or 1.0.4 or something

[WillAyd]

Suggested change

	INT32_MIN = -2_147_483_648LL
	INT32_MIN = -2_147_483_648L

Rather pedantic but the size of a long is at least 32 bits, so no need for long long here.

[WillAyd]

FYI here's some interesting info on why we probably need this suffix depending on the architecture / compilation standard:

https://stackoverflow.com/questions/9941261/warning-this-decimal-constant-is-unsigned-only-in-iso-c90#20910712

[WillAyd]

So ignore original comment; I think LL might be correct here