pythonbuild: add xxlimited_35 extension reference

This extension appears to exist in 3.10.

Author: indygreg

pythonbuild/cpython.py

@@ -168,6 +168,7 @@ def derive_setup_local(
     if debug:
         # Doesn't work in debug builds.
         disabled.add(b"xxlimited")
+        disabled.add(b"xxlimited_35")
 
     with tarfile.open(str(cpython_source_archive)) as tf:
         # Setup.dist removed in Python 3.8.