git: openjdk/jdk: 8303001: Add test for re-entrant upcalls

[Jorn Vernee]

Changeset: 6d30bbe6
Author:    Jorn Vernee <jvernee at openjdk.org>
Date:      2023-03-10 14:42:54 +0000
URL:       https://git.openjdk.org/jdk/commit/6d30bbe62c10af0f2c80cb1eaac3d171fb7bffcb

8303001: Add test for re-entrant upcalls

Reviewed-by: mcimadamore

+ test/jdk/java/foreign/stackwalk/TestReentrantUpcalls.java
+ test/jdk/java/foreign/stackwalk/libReentrantUpcalls.c