[PATCH] sunjre: check all four possible OpenJDK variants for libjvm.so

[PATCH] sunjre: check all four possible OpenJDK variants for libjvm.so

Since OpenJDK 21, the "minimal" and "zero" variants of JVM no longer
reside in the "server" directory in $JAVA_HOME/lib, making the loader
unable to find libjvm.so. This regresses LO builds on platforms with
only those variants of JVM (i.e. without a HotSpot port).

Example error message is like this:

> exception occurred: Could not create Java implementation loader at
> ./stoc/source/javaloader/javaloader.cxx:551

Fix it by probing all four possible variant directories for libjvm.so.
This is tested on Debian unstable (loong64 port) to fix the packaging.

Link: https://bugs.openjdk.org/browse/JDK-8273494
Link: https://github.com/openjdk/jdk/pull/5440
Link: https://github.com/openjdk/jdk/commit/8fbcc8239a3fc04e56ebbd287c7bb5db731977b7
Change-Id: I3545f93054d7a3af0181e4c739c82efaaf8aeaed

Gbp-Pq: Name jdk-minimal-and-zero-paths.diff