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Originally from build #708

Changes

1. Mark JOGL/GlueGen NativeSignature*Emitter 'to be reviewed' and adapt it to GlueGen commit 3d527ea538c9e9897f86a0f6bdae0cab44d239c3 (details / cgit)
2. Reviewed JOGL GlueGen Tags: NIODirectOnly - Removed where not technically required. Added comment reasoning NIODirectOnly. (details / cgit)