- is_builtin(), init_builtin(), load_builtin() and other builtin related
   functions use Unicode strings, instead of byte strings
 - Rename _PyImport_FixupExtensionUnicode() to _PyImport_FixupExtensionObject()
 - Rename _PyImport_FindExtensionUnicode() to _PyImport_FindExtensionObject()

find_frozen(), get_frozen_object(), is_frozen_package() and other functions
related to frozen modules use Unicode strings instead of byte strings.

Replace strcmp() by PyUnicode_CompareWithASCIIString()

 - Use Unicode for module paths and names, self->archive and self->prefix
 - Format module names and paths use %R instead of '%U' to escape surrogate
   characters (PEP 383)
 - Use PyImport_ExecCodeModuleObject() instead of PyImport_ExecCodeModuleEx()
 - Use PyImport_AddModuleObject() instead of PyImport_AddModule()

Call unfakehttp in order to close connection while opening the connection through a fakehttp object.
Address issue11609 - urllib related buildbots failure.

unbuffered pipes, such that select() works properly on them.

unbuffered pipes, such that select() works properly on them.

unbuffered pipes, such that select() works properly on them.

Last attempt to get compiler recursion crasher to fail reliably across platforms before giving up and skipping it as unreliably platform dependent