[foreign] binary snapshot update

[Maurizio Cimadamore]

Hi,
as promised, we've just released an updated binary snapshot which fixes 
some of the most thorny issues discovered last week:

* cross-header layout resolution leads to spurious exceptions [1]
* lack of ways to create a null callback [2]
* add ways to get field offset given a struct [5]

In addition, this snapshot implements the revised Scope API proposal 
described in [3], for which some compatibility migration mechanism has 
been added (see [4]) to (hopefully) keep most of your code happy.

Thanks for the great feedback so far! Please keep it coming!

Cheers
Maurizio

[1] - https://bugs.openjdk.java.net/browse/JDK-8219042
[2] - https://bugs.openjdk.java.net/browse/JDK-8219119
[3] - http://cr.openjdk.java.net/~mcimadamore/panama/scopes.html
[4] - https://bugs.openjdk.java.net/browse/JDK-8219231
[5] - https://bugs.openjdk.java.net/browse/JDK-8219103


On 13/02/2019 21:28, Maurizio Cimadamore wrote:
> Dear Panam-hackers,
> We have just finished releasing another early access snapshot of the 
> foreign function/data support:
>
> http://jdk.java.net/panama/
>
> This time it comes with a link to a useful guide to extract many 
> common native libraries (Tensorflow, BLAS, Lapack, OpenGL, and many 
> more), which I'll readd here for completeness:
>
> https://hg.openjdk.java.net/panama/dev/raw-file/c359a9e944de/doc/panama_foreign.html 
>
>
> I'd like to thank all the people in the team for the tremendous effort 
> in pulling this together - we covered a lot of ground since the last 
> EA! And a big thank to the people who chimed in and helped - most 
> notably to Jorn Vernee, whose contributions have been instrumental in 
> delivering Windows x64 support.
>
> At this stage things feel usable enough (at least that has been our 
> recent experience, following many improvements on the jextract tool) 
> that we would really appreciate feedback - if you have a C library 
> that  you use as part of your project, give Panama a shot, see how it 
> works for you and report back to us. Whether it's a bug, a feature 
> that you think is missing, an API that is clunkier to use than it 
> should be - your feedback is the key to make Panama (and Java as a 
> whole) better!
>
> Cheers
> Maurizio
>