Refactoring upgrading lwjgl3 v.3

[JavaSaBr]

A compacted version of this PR:
#790

[JavaSaBr]

@Nehon attempt #3 :)

[JavaSaBr]

@Nehon anything else?

[AlrikG]

Hi JavaSaBr,
Sorry if you've already answered this question somewhere, but why did you remove the public access modifier from the GL class's statics and methods?

[JavaSaBr]

Hi, because the public is default access for interfaces.

[AlrikG]

Ok thanks :) I overlooked that. But this also means that you can remove the static and final modifiers from constants. Am I right? => https://docs.oracle.com/javase/tutorial/java/IandI/interfaceDef.html

[pspeed42]

Did you read back where we had him put it back because we prefer it the verbose way in this case?
a) it's easier to cut-paste
b) it's easier to grep/search through code
c) it avoids conversations like these where you have to point to the spec to prove that you can do it.

[AlrikG]

No sorry I only looked into the changes instead of the PR #790