Summary
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Introduce an option to disable dynamic resizing of system dictionaries during runtime.

Problem
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https://bugs.openjdk.java.net/browse/JDK-8184765 introduces a new feature that will automatically resize a system dictionary if the load factor is determined to be too high. As a new feature there is a possibility that it might detrimentally affect performance of certain big apps.

Solution
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Add a new, *temporary*, option "DynamicallyResizeSystemDictionaries" (default true) to allow users to disable the feature as needed.

Specification
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Complete code is at: http://cr.openjdk.java.net/~gziemski/8184765_rev4

    diagnostic(bool, DynamicallyResizeSystemDictionaries, true,               \
          "Dynamically resize system dictionaries as needed")               \