Add a combined source and binary assembly.

It differs from the one produced by Ant in these areas:
- the docs folder is called site
- the complete src/ directory is included, not just src/java/
- all files necessary to build the product using Ant, Maven 1 and Maven 2 are included
- the *-ide.zip file is not created or included

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/logging/trunk@496002 13f79535-47bb-0310-9956-ffa450edef68

pom.xml

@@ -304,11 +304,12 @@
 
       <plugin>
         <artifactId>maven-assembly-plugin</artifactId>
-        <!--
         <configuration>
-          <descriptor>src/maven/assembly/bin-distro.xml</descriptor>
+          <descriptors>
+            <descriptor>src/assembly/assembly.xml</descriptor>
+          </descriptors>
+          <tarLongFileMode>gnu</tarLongFileMode>
         </configuration>
-        -->
       </plugin>
 
     </plugins>