Issue #15020: The program name used to search for Python's path is now python3 under Unix, not python.

Issue #15020: The program name used to search for Python's path is now "python3" under Unix, not "python".

Fix issue # 15033 - Return the proper exitcode for failure when modules are invoked using -m switch. Patch contributed by Jeff Knupp

Fix issue # 15033 - Return the proper exitcode for failure when modules are invoked using -m switch. Patch contributed by Jeff Knupp

working without _frozen_importlib by moving to an import over a direct
access in sys.modules.

Closes #14902: Fixed timezone conversion of a date/time in the past. Thanks to Yuriy Syrovetskiy for the report and Juancarlo Añez for the patch on which this fix is based.

Also eliminates some C code in Python/import.c as well.

Patch by Eric Snow with verification by comparing against another
patch from Jeff Knupp.

importlib.__init__, then catch the KeyError raised, not ImportError.

file size header field.

Thanks to Marc Abramowitz and Ronan Lamy for helping out with various
parts of the patch.

  Regenerate aclocalm4 and configure.