Update to Java commit 09c3766 (2017.04.25): Fix test failure to load nio.file.Files on JDK 1.6.

No-op on CLR.  Just updating source file.

Author: dmiller

test/clojure/tools/namespace/dir_test.clj

@@ -25,7 +25,8 @@
     (.invoke to-file link (object-array 0))))
 
 ;; Only run this test on Java 1.7+, where java.nio.file.Files is available.
-#_(when (Class/forName "java.nio.file.Files")
+#_(when (try (Class/forName "java.nio.file.Files")
+           (catch ClassNotFoundException _ false))
   (deftest t-scan-by-canonical-path
     (let [dir (help/create-temp-dir "t-scan-by-canonical-path")
           main-clj (help/create-source dir 'example.main :clj '[example.one])