Removing cmp() breaks distutils. I get the following exception, for
example using the just released version 3.0.1:

Traceback (most recent call last):
  File "setup.py", line 318, in <module>
    classifiers = classifiers)
  File "c:\Python30\lib\distutils\core.py", line 149, in setup
    dist.run_commands()
  File "c:\Python30\lib\distutils\dist.py", line 942, in run_commands
    self.run_command(cmd)
  File "c:\Python30\lib\distutils\dist.py", line 962, in run_command
    cmd_obj.run()
  File "c:\Python30\lib\distutils\command\build.py", line 128, in run
    self.run_command(cmd_name)
  File "c:\Python30\lib\distutils\cmd.py", line 317, in run_command
    self.distribution.run_command(command)
  File "c:\Python30\lib\distutils\dist.py", line 962, in run_command
    cmd_obj.run()
  File "c:\Python30\lib\distutils\command\build_ext.py", line 306, in run
    force=self.force)
  File "c:\Python30\lib\distutils\ccompiler.py", line 1110, in new_compiler
    return klass(None, dry_run, force)
  File "c:\Python30\lib\distutils\cygwinccompiler.py", line 314, in __init__
    if self.gcc_version <= "2.91.57":
  File "c:\Python30\lib\distutils\version.py", line 64, in __le__
    c = self._cmp(other)
  File "c:\Python30\lib\distutils\version.py", line 341, in _cmp
    return cmp(self.version, other.version)
NameError: global name 'cmp' is not defined