- added popen.popen2/popen3/popen4 support for
  windows.

- added optional mode argument to popen2/popen3
  for unix; if the second argument is an integer,
  it's assumed to be the buffer size.

- changed nt.popen2/popen3/popen4 return values
  to match the popen2 module (stdout first, not
  stdin).
2 files changed