bpo-34595: WIP: Type fully qualified name by vstinner · Pull Request #9251 · python/cpython

* Add type.__fqn__ read-only attribute
* Add "!t" conversion to format string
* Add ":T" format to type.__format__()
* Add "%t" and "%T" formatters to PyUnicode_FromUnicodeV(), and so to
  PyUnicode_FromUnicode() and PyErr_Format().