Renamed types.py to otypes.py, to stop shadowing the python types module

[obi1kenobi]

The types.py file was shadowing the python builtin types module, causing python to fail to start when in the pyorient directory:

$ python
Traceback (most recent call last):
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site.py", line 62, in <module>
    import os
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 400, in <module>
    import UserDict
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/UserDict.py", line 83, in <module>
    import _abcoll
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/_abcoll.py", line 70, in <module>
    Iterable.register(str)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/abc.py", line 107, in register
    if not isinstance(subclass, (type, types.ClassType)):
AttributeError: 'module' object has no attribute 'ClassType'

This renames the problematic file to otypes.py following OrientDB's convention of prefixing types with an 'o'.

[mogui]

yup what a bad things !
thanks for it

[obi1kenobi]

Glad I could help!