Java module system/Jigsaw support for SwiftKitCore(JNI) and SwiftKitFFM

[chengenzhao]

Hi:

Java 9 introduces Jigsaw/Java module system.
& 25 introduces syntax of import module

import module org.swift.swiftkit.swiftkitcore;

so it would be nice to have the Java modularize support.

potential risk:
Not clear the impact of Android port.

thx

[ktoso]

Hmmm ill have to think about this; if there would be no downside to e.g. Android we could consider modularizing right away I guess…

[ktoso]

I appreciate the change but I'd like to delay this for now unless we can think of some very specific reason we should do it immediately