32bit linux compat

[pvizeli]

For using it with Home Assistant, I tried to compile it for our 32bit devices. I got some type errors. I see that it could support i32 but only with target windows. Would it be possible to support it also for Linux?

Errors:

error[E0308]: mismatched types
     --> src/lib.rs:34:77
      |
  34  |             PyModule_AddIntConstant($mptr, $name.as_ptr() as *const c_char, $opt as i64);
      |                                                                             ^^^^^^^^^^^ expected `i32`, found `i64`
  ...
  122 |     opt!(mptr, "OPT_APPEND_NEWLINE\0", opt::APPEND_NEWLINE);
      |     -------------------------------------------------------- in this macro invocation
      |
      = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
  help: you can convert an `i64` to an `i32` and panic if the converted value doesn't fit
      |
  34  |             PyModule_AddIntConstant($mptr, $name.as_ptr() as *const c_char, ($opt as i64).try_into().unwrap());
      |                                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

[ijl]

I fixed this issue in 3.6.5. If there are other issues patches are welcome, but the limiting factor is not having CI for 32-bit targets.