bpo-35134: Move non-limited C API of include/compile.h into include/cpython.

[shihai1991]

https://bugs.python.org/issue35134

[shihai1991]

@vstinner Hi, Victor. When you plan to rewrite pyarena.h, I think this compile.h should be updated too :)

But I am not sure the declaration of PyAST_XXX in compile.h can be moved to include/internal or not.
I checked several search results of PyAST_CompileEx in github.com and didn't find anybody calling this function directly.

[vstinner]

It doesn't work, compile.h ends with a few API which are part of the limited C API:

/* These definitions must match corresponding definitions in graminit.h. */
#define Py_single_input 256
#define Py_file_input 257
#define Py_eval_input 258
#define Py_func_type_input 345

/* This doesn't need to match anything */
#define Py_fstring_input 800

If you want to move APIs excluded from the limited C API, you need to create Include/cpython/compile.h and include it from Include/compile.h.

[bedevere-bot]

A Python core developer has requested some changes be made to your pull request before we can consider merging it. If you could please address their requests along with any other requests in other reviews from core developers that would be appreciated.

Once you have made the requested changes, please leave a comment on this pull request containing the phrase I have made the requested changes; please review again. I will then notify any core developers who have left a review that you're ready for them to take another look at this pull request.

[shihai1991]

thanks, victor.