[issue23839] Clear caches after every test

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Synchronized with current code and added clearing typing caches.

----------
Added file: http://bugs.python.org/file45413/regrtest_clear_caches_2.patch

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue23839>
_______________________________________