RFR: 8206904: [lworld] fix Unsafe get* with value types

[Tobias Hartmann]

Hi Roland,

On 09.07.2018 15:43, Roland Westrelin wrote:
>> Why do you need the (long)(int) cast in library_call.cpp?
> 
> A giant offset, once truncated to int, could still pass:
> vk->contains_field_offset(off).

Right, thanks for the explanation. Looks good.

Tobias