MAPREDUCE-6537. Include hadoop-pipes examples in the release tarball. Contributed by Kai Sasaki.

(cherry picked from commit 9e8411d0a630cabbfe7493763c172ff6754e51be)
(cherry picked from commit 5f46076f2bfc646a074a01f7968e3277f7e4abac)

hadoop-assemblies/src/main/resources/assemblies/hadoop-tools.xml

@@ -44,6 +44,13 @@
       </includes>
       <outputDirectory>lib/native</outputDirectory>
     </fileSet>
+    <fileSet>
+      <directory>../hadoop-pipes/target/native/examples</directory>
+      <includes>
+        <include>*</include>
+      </includes>
+      <outputDirectory>lib/native/examples</outputDirectory>
+    </fileSet>
     <fileSet>
       <directory>../hadoop-archives/target</directory>
       <outputDirectory>/share/hadoop/${hadoop.component}/sources</outputDirectory>