in importlib.

Thanks to PJE for pointing out the issue and Nick Coghlan for filing
the bug.

or __name__ are not set in globals.

Thanks to Stefan Behnel for the bug report.

chown() to root under certain circumstances.

chown() to root under certain circumstances.

conditions when regrtest is run with its -j option.

for extension modules on Windows.

Thanks to Eric Snow for helping with imp.load_module() (previous
commit) which led to the removal of a bunch of C code.