Integrated: 7903636: update jextract sample scripts for --source option removal

[Athijegannathan Sundararajan]

On Mon, 22 Jan 2024 06:36:23 GMT, Athijegannathan Sundararajan <sundar at openjdk.org> wrote:

> * removing --source option in scripts
> * removing binary .class generating scripts (as normal scripts do compilation by javac anyway)
> * removing unnecessary --enable-preview option in run scripts.
> * updating gradle version to be the latest (8.5) so that we can use JDK 21 for gradle run itself.

This pull request has now been integrated.

Changeset: 43370cf7
Author:    Athijegannathan Sundararajan <sundar at openjdk.org>
URL:       https://git.openjdk.org/jextract/commit/43370cf740956cb15dd997ee1df2263747521a77
Stats:     621 lines in 84 files changed: 194 ins; 265 del; 162 mod

7903636: update jextract sample scripts for --source option removal

Co-authored-by: Jorn Vernee <jvernee at openjdk.org>
Reviewed-by: mcimadamore

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PR: https://git.openjdk.org/jextract/pull/189