HADOOP-9051 Fix ant clean/test with circular symlinks in build dir. (llu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1.1@1422179 13f79535-47bb-0310-9956-ffa450edef68

build.xml

@@ -1047,7 +1047,7 @@
       <delete file="${test.build.dir}/testsfailed"/>
       <delete dir="@{test.dir}/data" />
       <mkdir dir="@{test.dir}/data" />
-      <delete dir="@{test.dir}/logs" />
+      <delete dir="@{test.dir}/logs" followSymlinks="false"/>
       <mkdir dir="@{test.dir}/logs" />
       <copy file="${test.src.dir}/hadoop-policy.xml"
             todir="@{test.dir}/extraconf" />
@@ -1964,7 +1964,7 @@
   <!-- Clean.  Delete the build files, and their directories              -->
   <!-- ================================================================== -->
   <target name="clean" depends="clean-contrib, clean-sign, clean-fi" description="Clean.  Delete the build files, and their directories">
-    <delete dir="${build.dir}"/>
+    <delete dir="${build.dir}" followSymlinks="false"/>
     <delete dir="${docs.src}/build"/>
     <delete dir="${src.docs.cn}/build"/>
     <delete dir="${package.buildroot}"/>