rombuilding fixes - stop exporting base.iby, and set the other bits to work with the kernel base.iby
#ifndef Py_AST_H
#define Py_AST_H
#ifdef __cplusplus
extern "C" {
#endif
PyAPI_FUNC(mod_ty) PyAST_FromNode(const node *, PyCompilerFlags *flags,
const char *, PyArena *);
#ifdef __cplusplus
}
#endif
#endif /* !Py_AST_H */