RFR: JDK-8273959: Some metaspace diagnostic switches should be develop

[Jie Fu]

On Sat, 18 Sep 2021 08:48:01 GMT, Jie Fu <jiefu at openjdk.org> wrote:

>> May I have reviews please for this fix.
>> 
>> The switches `MetaspaceHandleDeallocations` and `MetaspaceGuardAllocations` control debug-only features and consequently should be develop instead.
>> 
>> Unnecessary usage of -XX:+UnlockDiagnosticVMOptions is removed (in two cases unrelated to the changed switches).
>
> Do we need a CSR for this change?

> @DamonFool for reference: https://wiki.openjdk.java.net/display/HotSpot/Hotspot+Command-line+Flags%3A+Kinds%2C+Lifecycle+and+the+CSR+Process

Got it.
Thanks @dholmes-ora .

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PR: https://git.openjdk.java.net/jdk/pull/5573