RFR: 8305955: Remove Visual C++ specific workaround in javac

[Julian Waters]

On Mon, 5 Jun 2023 17:14:45 GMT, Jonathan Gibbons <jjg at openjdk.org> wrote:

>> Visual C++ no longer requires the use of the i64 literal syntax and instead recommends the use of LL instead, so we should remove this workaround in the JNIWriter (this also helps when users write Windows JNI code meant to be compiled with alternate compilers other than Visual C++)
>
> A conservative solution would be to change the default but provide a mechanism like a hidden option to restore the old behavior in case anyone needs it.
> 
> The current behavior is not specified (but that's a different bug!) so a CSR should not be necessary, but in that case, I would advise a [Release Note](https://openjdk.org/guide/#release-notes).

@jonathan-gibbons ?

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PR Comment: https://git.openjdk.org/jdk/pull/13457#issuecomment-1600264833