RFR: 8239095: Upgrade libFFI to the latest 3.3 version

[Johan Vos]

On Mon, 1 Jun 2020 09:54:23 GMT, Ambarish Rapte <arapte at openjdk.org> wrote:

>> - Updated libffi to 3.3.
>
> modules/javafx.media/src/main/native/gstreamer/3rd_party/libffi/include/ffitarget.h line 53:
> 
>> 52: #define FFI_TARGET_SPECIFIC_STACK_SPACE_ALLOCATION
>> 53: #ifndef _MSC_VER
>> 54: #define FFI_TARGET_HAS_COMPLEX_TYPE
> 
> In the original release of [libffi 3.2.1](https://github.com/libffi/libffi/releases/tag/v3.2.1),  this line is not
> commented. which means it was commented in JavaFX. I cannot trace when and why was it commented. Should it be reasoned
> to whether enable it or not ?

That's a good question. The commented line was there from the first commit (in 9, changeset 9231:241f9696e3ad,
https://bugs.openjdk.java.net/browse/JDK-8043352) but I don't see a reason on why it was disabled.

libffi is also built in the GraalVM project, and that line is not commented there.

@sashamatveev or @kevinrushforth do you remember the reason?

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PR: https://git.openjdk.java.net/jfx/pull/242