Avoid multiarray allocations in AESCrypt.makeSessionKey

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      One of our services has a hot path with AES/GCM cipher reuse. The JDK code reinitializes the session key on that path, and JDK-8308105 shows up prominently there. Fixing JDK-8308105 would take a while, as would likely require multiple patches in VM internals. Meanwhile, we can avoid the multiarray allocations in AESCrypt.makeSessionKey completely, reaping performance benefits.

        1. AES-GCM-reinit-profile.png
          AES-GCM-reinit-profile.png
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            Assignee:
            Aleksey Shipilev
            Reporter:
            Aleksey Shipilev
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