Issue #17095: Temporarily revert getpath.c change that added the Modules
directory to sys.path when running from a build directory.  That has
proven to be problematic for several standard library modules with
C extension modules whose builds can fail on some platforms.

--HG--
branch : 3.4
Issue #17095: merge from 3.4
Fix full-stop whitespace in configparser docs
Restored re pickling test.

--HG--
branch : 3.4
Restored re pickling test.
Closes #18159: ConfigParser getters not available on SectionProxy
Closes #18159: ConfigParser getters not available on SectionProxy
Issue #22166: clear codec caches in test_codecs

--HG--
branch : 3.4
Merge fix for issue #22166 from 3.4