Update py-cffi to 1.3.0:

v1.3.0
======

* Added `ffi.memmove()`_.

* Pull request #64: out-of-line API mode: we can now declare
  floating-point types with ``typedef float... foo_t;``.  This only
  works if ``foo_t`` is a float or a double, not ``long double``.

* Issue #217: fix possible unaligned pointer manipulation, which crashes
  on some architectures (64-bit, non-x86).

* Issues #64 and #126: when using ``set_source()`` or ``verify()``,
  the ``const`` and ``restrict`` keywords are copied from the cdef
  to the generated C code; this fixes warnings by the C compiler.
  It also fixes corner cases like ``typedef const int T; T a;``
  which would previously not consider ``a`` as a constant.  (The
  cdata objects themselves are never ``const``.)

* Win32: support for ``__stdcall``.  For callbacks and function
  pointers; regular C functions still don't need to have their `calling
  convention`_ declared.

* Windows: CPython 2.7 distutils doesn't work with Microsoft's official
  Visual Studio for Python, and I'm told this is `not a bug`__.  For
  ffi.compile(), we `removed a workaround`__ that was inside cffi but
  which had unwanted side-effects.  Try saying ``import setuptools``
  first, which patches distutils...

.. _`ffi.memmove()`: using.html#memmove
.. __: https://bugs.python.org/issue23246
.. __: https://bitbucket.org/cffi/cffi/pull-requests/65/remove-_hack_at_distutils-which-imports/diff
.. _`calling convention`: using.html#windows-calling-conventions


(wiz)