Log Message:
py-cffi: updated to 1.11.4

v1.11.4:
* Windows: reverted linking with python3.dll, because virtualenv does not make \ 
this DLL available to virtual environments for now. On Windows only, the C \ 
extension modules created by cffi follow for now the standard naming scheme \ 
foo.cp36-win32.pyd, to make it clear that they are regular CPython modules \ 
depending on python36.dll.