* Move Python/formatter_unicode.c to Objects/unicode_formatter.c. * Move Objects/stringlib/localeutil.h content into unicode_formatter.c. Remove localeutil.h. * Move _PyUnicode_InsertThousandsGrouping() to unicode_formatter.c and mark the function as static. * Rename unicode_fill() to _PyUnicode_Fill() and export it in pycore_unicodeobject.h. * Move MAX_UNICODE to pycore_unicodeobject.h as _Py_MAX_UNICODE.
Source files for various builtin objects