```
devel/py-capstone: Update to 4.0.1
Also, set NO_ARCH while here.
```
BTW:
- This port has to be kept in sync with devel/capstone4. Otherwise, runtime errors may occur.
- I am not sure if its safe to update this port to another major version. I've not tested the ports depending on this port. (**UPDATE**: I've checked all the depending ports already. See the comments for details.).