Utility method to treat Iterable as a Stream.

Change-Id: I70564ee9fa675c4293aa733b1a28e63c12dea0b7

@@ -46,6 +46,8 @@ import java.util.concurrent.Future;
 import java.util.concurrent.ThreadFactory;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
+import java.util.stream.Stream;
+import java.util.stream.StreamSupport;
 
 import org.slf4j.Logger;
 
@@ -460,6 +462,16 @@ public abstract class Tools {
         return bytes;
     }
 
+    /**
+     * Converts an Iterable to a Stream.
+     *
+     * @param it Iterable to convert
+     * @return Iterable as a Stream
+     */
+    public static <T> Stream<T> stream(Iterable<T> it) {
+        return StreamSupport.stream(it.spliterator(), false);
+    }
+
     // Auxiliary path visitor for recursive directory structure copying.
     private static class DirectoryCopier extends SimpleFileVisitor<Path> {
         private Path src;