Upgrade gjavah

[sideeffffect]

No description provided.

[pomadchin]

Thanks for your first contribution! 🎉
Hmm, I'm wondering, can we make a direct dependecy on https://github.com/Glavo/gjavah?

[sideeffffect]

Unfortunately, gjavah isn't published to Maven Central.
So I'd prefer to just "upgrade" it like this PR does.

[pomadchin]

@sideeffffect hmm got it, and https://jitpack.io doesn't work for you?
But anyway I'm good to merge it as-is in order to avoid having a dependency to an extra repo.

[sideeffffect]

jitpack.io is neat, but it's more of a hack. Many people rely on mirrors that include only Maven Central (and maybe few other prominent repositories), typically enterprises, etc...

[pomadchin]

Merging once CI is 🟢