Update stable ABI script for MacOS and update list of exported symbols (GH-23783)

Doc/data/stable_abi.dat

@@ -743,6 +743,7 @@ Py_FileSystemDefaultEncodeErrors
 Py_FileSystemDefaultEncoding
 Py_Finalize
 Py_FinalizeEx
+Py_FrozenMain
 Py_GenericAlias
 Py_GenericAliasType
 Py_GetBuildInfo

Tools/scripts/stable_abi.py

@@ -31,6 +31,7 @@ EXCLUDED_HEADERS = {
     "ucnhash.h",
 }
 
+MACOS = (sys.platform == "darwin")
 
 def get_exported_symbols(library, dynamic=False):
     # Only look at dynamic symbols
@@ -57,6 +58,9 @@ def get_exported_symbols(library, dynamic=False):
             continue
 
         symbol = parts[-1]
+        if MACOS and symbol.startswith("_"):
+            yield symbol[1:]
+        else:
             yield symbol