(http://bugs.python.org/issue2882)

  that function actually tests something on OSX).

- Add documentation to platform.mac_ver that explains why the middle element
  of the return value will not contain useful information.

getproxies_macosx_sysconf uses ctypes to call SystemConfiguration APIs. This
checkin adds ctypes annotation to specify the right argument types for the
API's that are used.

This is needed to be able to use urllib on a 64-bit system, without
annotations you'd get a hard crash.

and make sure there are no duplicate names.

to ease removal of the latter in Py3k.

(http://bugs.python.org/issue2882)

(http://bugs.python.org/issue2882)

(http://bugs.python.org/issue2882)

Else people doing "from tkinter import *" will get a nasty surprise.