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

third_party/psutil/psutil/_psutil_osx.h

 /*
- * $Id: _psutil_osx.h 780 2010-11-10 18:42:47Z jloden $
+ * $Id: _psutil_osx.h 1142 2011-10-05 18:45:49Z g.rodola $
+ *
+ * Copyright (c) 2009, Jay Loden, Giampaolo Rodola'. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
  *
  * OS X platform-specific module methods for _psutil_osx
  */
 
 #include <Python.h>
 
 // --- per-process functions
 static PyObject* get_process_name(PyObject* self, PyObject* args);
 static PyObject* get_process_cmdline(PyObject* self, PyObject* args);
 static PyObject* get_process_ppid(PyObject* self, PyObject* args);
-static PyObject* get_process_uid(PyObject* self, PyObject* args);
-static PyObject* get_process_gid(PyObject* self, PyObject* args);
+static PyObject* get_process_uids(PyObject* self, PyObject* args);
+static PyObject* get_process_gids(PyObject* self, PyObject* args);
 static PyObject* get_cpu_times(PyObject* self, PyObject* args);
 static PyObject* get_process_create_time(PyObject* self, PyObject* args);
 static PyObject* get_memory_info(PyObject* self, PyObject* args);
 static PyObject* get_process_num_threads(PyObject* self, PyObject* args);
+static PyObject* get_process_status(PyObject* self, PyObject* args);
+static PyObject* get_process_threads(PyObject* self, PyObject* args);
+static PyObject* get_process_open_files(PyObject* self, PyObject* args);
+static PyObject* get_process_connections(PyObject* self, PyObject* args);
+static PyObject* get_process_tty_nr(PyObject* self, PyObject* args);
 
 // --- system-related functions
-static int pid_exists(long pid);
 static PyObject* get_pid_list(PyObject* self, PyObject* args);
 static PyObject* get_num_cpus(PyObject* self, PyObject* args);
 static PyObject* get_total_phymem(PyObject* self, PyObject* args);
 static PyObject* get_avail_phymem(PyObject* self, PyObject* args);
 static PyObject* get_total_virtmem(PyObject* self, PyObject* args);
 static PyObject* get_avail_virtmem(PyObject* self, PyObject* args);
 static PyObject* get_system_cpu_times(PyObject* self, PyObject* args);
-
+static PyObject* get_system_per_cpu_times(PyObject* self, PyObject* args);
+static PyObject* get_system_boot_time(PyObject* self, PyObject* args);
+static PyObject* get_disk_partitions(PyObject* self, PyObject* args);
+static PyObject* get_network_io_counters(PyObject* self, PyObject* args);
+static PyObject* get_disk_io_counters(PyObject* self, PyObject* args);