Get minimum ABI alignment of pointee type of LLVM pointer type *ty*.

def get_pointee_abi_alignment(self, ty):
        """
        Get minimum ABI alignment of pointee type of LLVM pointer type *ty*.
        """
        size = ffi.lib.LLVMPY_ABIAlignmentOfElementType(self, ty)
        if size == -1:
            raise RuntimeError("Not a pointer type: %s" % (ty,))
        return size