python 3.4 compatability

[hartsock]

Running pip install pyvmomi in a python3 environment:

$ pip install pyvmomi
Downloading/unpacking pyvmomi
  Downloading pyvmomi-5.5.0.tar.gz (156Kb): 156Kb downloaded
  Storing download in cache at /Users/hartsocks/.pip/cache/https%3A%2F%2Fpypi.python.org%2Fpackages%2Fsource%2Fp%2Fpyvmomi%2Fpyvmomi-5.5.0.tar.gz
  Running setup.py egg_info for package pyvmomi

Installing collected packages: pyvmomi
  Running setup.py install for pyvmomi
      File "/Users/hartsocks/.venv/pyvmomi-tools-py3/lib/python3.4/site-packages/pyVim/connect.py", line 230
        except ValueError, ve:
                         ^
    SyntaxError: invalid syntax

      File "/Users/hartsocks/.venv/pyvmomi-tools-py3/lib/python3.4/site-packages/pyVmomi/DynamicTypeManagerHelper.py", line 48
        except vmodl.fault.MethodNotFound, err:
                                         ^
    SyntaxError: invalid syntax

      File "/Users/hartsocks/.venv/pyvmomi-tools-py3/lib/python3.4/site-packages/pyVmomi/Iso8601.py", line 179
        except Exception, e:
                        ^
    SyntaxError: invalid syntax

This should not happen.

[michaelrice]

This is basically a duplicate of issue #55