Amend previous commit of HDFS-3626: accidentally included a hunk from HADOOP-8621 in svn commit. Reverting that hunk

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1365818 13f79535-47bb-0310-9956-ffa450edef68

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileUtil.java

@@ -611,7 +611,7 @@ public class FileUtil {
    */
   public static int symLink(String target, String linkname) throws IOException{
     String cmd = "ln -s " + target + " " + linkname;
-    Process p = Runtime.getRuntime().exec(new String[]{"ln","-s",target,linkname}, null);
+    Process p = Runtime.getRuntime().exec(cmd, null);
     int returnVal = -1;
     try{
       returnVal = p.waitFor();