releng: as pointed by Manu and Bene, just include the main artifact in the -bin archive

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/fileupload/trunk@1461185 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/assembly/bin.xml b/src/main/assembly/bin.xml
index 0f4b42e..4b5ecc5 100644
--- a/src/main/assembly/bin.xml
+++ b/src/main/assembly/bin.xml
@@ -35,7 +35,7 @@
       <directory>target</directory>
       <outputDirectory>lib</outputDirectory>
       <includes>
-        <include>*.jar</include>
+        <include>${project.build.finalName}.jar</include>
       </includes>
     </fileSet>
   </fileSets>