Exclude module-info.java files from the build

They currently don't build with JDK 8.

Author: jduo

java/pom.xml

@@ -395,6 +395,7 @@
           <artifactId>maven-compiler-plugin</artifactId>
           <version>${maven-compiler-plugin.version}</version>
           <configuration>
+            <excludes>**/module-info.java</excludes>
             <annotationProcessorPaths>
               <path>
                 <groupId>org.immutables</groupId>