Thanks to Raúl Cumplido for the bug report and Thomas Kluyver for the
patch.

for importlib.util.resolve_name() but is needed.

Thanks to Martin Panter for the bug report.

statements search for __import__ in the global scope.

Thanks to Sergei Lebedev for finding the documentation bug.

with time.tzset().

with time.tzset().

with time.tzset().

Initialize package before calling find_spec() for __main__, so that we do not
incorrectly handle exceptions from __init__.py. When runpy is used from the
Python CLI, use an internal exception rather than ImportError, to avoid
catching unexpected exceptions.

Also remove exception message rewriting in _run_module_as_main(), because it
seems to be redundant with the _get_main_module_details() function.

Issue #25715: Python 3.5.1 installer shows wrong upgrade path and incorrect logic for launcher detection.