[issue1378] fromfd() and dup() for _socket on WIndows

[Guido van Rossum]

Guido van Rossum added the comment:

socket3.diff builds on socket2.diff:

- Rename socket class to Socket; add socket() as a factory function.

- Implement roudkerk's suggestion of using a duplicate socket in
makefile() to get rid of the manual reference counting. Yay!

Note: this dinterferes with Bill Janssen's issue 1451.  Whichever is
checked in last must fix issues with the other.

__________________________________
Tracker <report at bugs.python.org>
<http://bugs.python.org/issue1378>
__________________________________