Update third_party/psutil and fix the licence issue with it.

third_party/psutil/psutil/compat.py

-#!/usr/bin/env python
-#
-# $Id: compat.py 712 2010-10-20 15:25:57Z g.rodola $
-#
-
-"""Module which provides compatibility with older Python versions."""
-
-from operator import itemgetter as _itemgetter
-from keyword import iskeyword as _iskeyword
-import sys as _sys
-
-
-def namedtuple(typename, field_names, verbose=False, rename=False):
-    """A collections.namedtuple implementation written in Python
-    to support Python versions < 2.6.
-
-    Taken from: http://code.activestate.com/recipes/500261/
-    """
-    # Parse and validate the field names.  Validation serves two
-    # purposes, generating informative error messages and preventing
-    # template injection attacks.
-    if isinstance(field_names, basestring):
-         # names separated by whitespace and/or commas
-        field_names = field_names.replace(',', ' ').split()
-    field_names = tuple(map(str, field_names))
-    if rename:
-        names = list(field_names)
-        seen = set()
-        for i, name in enumerate(names):
-            if (not min(c.isalnum() or c=='_' for c in name) or _iskeyword(name)
-                or not name or name[0].isdigit() or name.startswith('_')
-                or name in seen):
-                    names[i] = '_%d' % i
-            seen.add(name)
-        field_names = tuple(names)
-    for name in (typename,) + field_names:
-        if not min(c.isalnum() or c=='_' for c in name):
-            raise ValueError('Type names and field names can only contain ' \
-                             'alphanumeric characters and underscores: %r'
-                             % name)
-        if _iskeyword(name):
-            raise ValueError('Type names and field names cannot be a keyword: %r' \
-                             % name)
-        if name[0].isdigit():
-            raise ValueError('Type names and field names cannot start with a ' \
-                             'number: %r' % name)
-    seen_names = set()
-    for name in field_names:
-        if name.startswith('_') and not rename:
-            raise ValueError('Field names cannot start with an underscore: %r'
-                             % name)
-        if name in seen_names:
-            raise ValueError('Encountered duplicate field name: %r' % name)
-        seen_names.add(name)
-
-    # Create and fill-in the class template
-    numfields = len(field_names)
-    # tuple repr without parens or quotes
-    argtxt = repr(field_names).replace("'", "")[1:-1]
-    reprtxt = ', '.join('%s=%%r' % name for name in field_names)
-    template = '''class %(typename)s(tuple):
-        '%(typename)s(%(argtxt)s)' \n
-        __slots__ = () \n
-        _fields = %(field_names)r \n
-        def __new__(_cls, %(argtxt)s):
-            return _tuple.__new__(_cls, (%(argtxt)s)) \n
-        @classmethod
-        def _make(cls, iterable, new=tuple.__new__, len=len):
-            'Make a new %(typename)s object from a sequence or iterable'
-            result = new(cls, iterable)
-            if len(result) != %(numfields)d:
-                raise TypeError('Expected %(numfields)d arguments, got %%d' %% len(result))
-            return result \n
-        def __repr__(self):
-            return '%(typename)s(%(reprtxt)s)' %% self \n
-        def _asdict(self):
-            'Return a new dict which maps field names to their values'
-            return dict(zip(self._fields, self)) \n
-        def _replace(_self, **kwds):
-            'Return a new %(typename)s object replacing specified fields with new values'
-            result = _self._make(map(kwds.pop, %(field_names)r, _self))
-            if kwds:
-                raise ValueError('Got unexpected field names: %%r' %% kwds.keys())
-            return result \n
-        def __getnewargs__(self):
-            return tuple(self) \n\n''' % locals()
-    for i, name in enumerate(field_names):
-        template += '        %s = _property(_itemgetter(%d))\n' % (name, i)
-    if verbose:
-        print template
-
-    # Execute the template string in a temporary namespace
-    namespace = dict(_itemgetter=_itemgetter, __name__='namedtuple_%s' % typename,
-                     _property=property, _tuple=tuple)
-    try:
-        exec template in namespace
-    except SyntaxError, e:
-        raise SyntaxError(e.message + ':\n' + template)
-    result = namespace[typename]
-
-    # For pickling to work, the __module__ variable needs to be set
-    # to the frame where the named tuple is created.  Bypass this
-    # step in enviroments where sys._getframe is not defined (Jython
-    # for example) or sys._getframe is not defined for arguments
-    # greater than 0 (IronPython).
-    try:
-        result.__module__ = _sys._getframe(1).f_globals.get('__name__', '__main__')
-    except (AttributeError, ValueError):
-        pass
-
-    return result