RFR: 8337563: NMT: rename MEMFLAGS to MemTag

[Kim Barrett]

On Tue, 10 Sep 2024 21:58:39 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

> Type template parameters should follow the style guide rules for type names. I've not noticed many (any?) cases of noncompliance.

... other than ConcurrentHashTable (sigh!)

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PR Comment: https://git.openjdk.org/jdk/pull/20872#issuecomment-2342084599