RFR: 8259820: JShell does not handle -source 8 properly

[Athijegannathan Sundararajan]

On Fri, 15 Jan 2021 09:29:28 GMT, Jan Lahoda <jlahoda at openjdk.org> wrote:

> When running JShell with `-C-source -C8`, only one (non-import) snippet can be processed. This is because, when cleaning javac state, the `REPL` package is looked up in the unnamed package, but with `-source 8`, there is no unnamed package, so the `REPL` package is not found and cleared properly. The proposed solution is to use `noModule` when running in non-module mode (i.e. with `-source 8`).

Marked as reviewed by sundar (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/2097