build/CheckFiles.java introduced in 27+5 needs updating for Valhalla:

  visiting file:c:\\ade\\mesos\\work_dir\\jib-master\\install\\2026-01-20-0702527.david.simms.valhalla_merging\\windows-x64.jdk\\jdk-27\\lib\\valueclasses\\java.base-valueclasses.jar
  --> ERROR this file is not allowed:java.base-valueclasses.jar
Bin directory scan successful.
----------System.err:(10/504)----------
java.lang.Error: lib dir scan failed
at CheckFiles.main(CheckFiles.java:122)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:565)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:335)
at java.base/java.lang.Thread.run(Thread.java:1516)

JavaTest Message: Test threw exception: java.lang.Error
JavaTest Message: shutting down test

result: Failed. Execution failed: `main' threw exception: java.lang.Error: lib dir scan failed


test result: Failed. Execution failed: `main' threw exception: java.lang.Error: lib dir scan failed