RFR: (XXS): JDK-8087205: Follow-up fix in langtools for JDK-8085822

[Kumar Srinivasan]

Hello,

Please review fix to maintain backward compatibility  mainly required
by langtools developers who use a pre-verona jdk for quick build/test,
and for bug triaging and isolation purposes.

https://bugs.openjdk.java.net/browse/JDK-8087205

Thanks
Kumar


diff --git 
a/src/java.compiler/share/classes/javax/lang/model/SourceVersion.java 
b/src/java.compiler/share/classes/javax/lang/model/SourceVersion.java
--- a/src/java.compiler/share/classes/javax/lang/model/SourceVersion.java
+++ b/src/java.compiler/share/classes/javax/lang/model/SourceVersion.java
@@ -169,6 +169,7 @@

              switch (specVersion) {
                  case "9":
+                case "1.9":
                      return RELEASE_9;
                  case "1.8":
                      return RELEASE_8;