Jdk 9 support - skip module-info.class

[csoroiu]

I created a project that compiles with maven using indications from:
http://maven.apache.org/plugins/maven-compiler-plugin/examples/module-info.html

Basically, after doing that the target/classes folder contains the:

• module-info.class file which has the bytecode version defined as: 0x35 (53 - Java 9)
• all the other classes have the bytecode version 0x34 (52 - Java 8)

Retrolambda fails with the exception:

java.lang.IllegalArgumentException
    at net.orfjackal.retrolambda.asm.ClassReader.<init>(ClassReader.java:185)
    at net.orfjackal.retrolambda.asm.ClassReader.<init>(ClassReader.java:168)
    at net.orfjackal.retrolambda.interfaces.ClassAnalyzer.analyze(ClassAnalyzer.java:23)
    at net.orfjackal.retrolambda.Retrolambda$1.visitClass(Retrolambda.java:62)
    at net.orfjackal.retrolambda.files.ClasspathVisitor.visitFile(ClasspathVisitor.java:29)
    at net.orfjackal.retrolambda.files.ClasspathVisitor.visitFile(ClasspathVisitor.java:11)
    at java.nio.file.Files.walkFileTree(Files.java:2670)
    at java.nio.file.Files.walkFileTree(Files.java:2742)
    at net.orfjackal.retrolambda.Retrolambda.visitFiles(Retrolambda.java:98)
    at net.orfjackal.retrolambda.Retrolambda.run(Retrolambda.java:59)
    at net.orfjackal.retrolambda.Main.main(Main.java:28)

The failure is due to the asm library, but in any case the module-info.class file should not be converted as it is not interpreted by Java 8 or lower.
If I exclude the module-info.java file from build everything works fine.

[luontola]

This has been fixed in Retrolambda 2.5.2