JDK 14 RFR (XXS) of JDK-8235499: Change HotSpot jtreg records test to better handle JDK updates

[Joe Darcy]

Hello,

Several of the HotSpot tests for records need small changes to more 
gracefully handle JDK updates, such as JDK 14 -> 15 coming up soon!

     http://cr.openjdk.java.net/~darcy/8235499.0/

Patch below.

(Some updates will be need to make all the tests in this directory pass 
on 15, but these small updates are valid independently.)

Thanks,

-Joe

--- old/test/hotspot/jtreg/runtime/records/ignoreRecordAttribute.java 
2019-12-06 10:44:14.592741024 -0800
+++ new/test/hotspot/jtreg/runtime/records/ignoreRecordAttribute.java 
2019-12-06 10:44:14.264741024 -0800
@@ -35,7 +35,7 @@
  public class ignoreRecordAttribute {

      public static void main(String[] args) throws Exception {
-
+        String MAJOR_VERSION = Integer.toString(44 + 
Runtime.version().feature());
          ProcessBuilder pb = 
ProcessTools.createJavaProcessBuilder("--enable-preview",
              "-Xlog:class+record", "-Xshare:off", "superNotJLRecord");
          OutputAnalyzer output = new OutputAnalyzer(pb.start());
@@ -46,7 +46,7 @@
              "-Xlog:class+record", "-Xshare:off", "recordIgnoredVersion");
          output = new OutputAnalyzer(pb.start());
          output.shouldContain("Ignoring Record attribute");
-        output.shouldContain("because class file version is not 58.65535");
+        output.shouldContain("because class file version is not " + 
MAJOR_VERSION + ".65535");
      }

  }
--- old/test/hotspot/jtreg/runtime/records/recordReflectionTest.java 
2019-12-06 10:44:15.276741024 -0800
+++ new/test/hotspot/jtreg/runtime/records/recordReflectionTest.java 
2019-12-06 10:44:15.036741024 -0800
@@ -23,7 +23,7 @@

  /*
   * @test
- * @compile --enable-preview --source 14 recordReflectionTest.java
+ * @compile --enable-preview --source ${jdk.version} 
recordReflectionTest.java
   * @run main/othervm --enable-preview recordReflectionTest
   */