[code-quality] Lots of E1101 in standard modules after upgrading pylint to 1.4.0

[Paul Smith]

On Wed, 2014-11-26 at 17:14 -0500, Paul Smith wrote:
>      if os.name == 'nt':
>          STD_LIB_DIRS.append(os.path.join(sys.prefix, 'dlls'))

Also, I don't use this on Windows but this looks odd to me: wouldn't the
"dlls" directory appear underneath exec_prefix, not prefix?