Added ExpandEnvironmentStrings to the _winreg module.

This prevents traceback prints pointing to files in this way:

  File "\loewis\25\python\Modules\_ctypes\callbacks.c", line 206, in 'calling callback function'

Patch 1114: fix compilation of curses module on 64-bit AIX, and any other LP64 platforms where attr_t isn't a C long

by the current context.  Thanks Mark Dickinson.

Patch #602345 by Neal Norwitz and me: add -B option and PYTHONDONTWRITEBYTECODE envvar to skip writing bytecode.

for TIPC under Linux, see http://tipc.sf.net/ for more information.
Thanks to Alberto Bertogli for the patch

Updated docs for basicConfig to indicate it's a no-op if handlers have been defined for the root logger.

ABCs.