flatten library directory

fixes #3384

Author: Vladimir Kotal

distribution/assembly.xml

@@ -47,14 +47,14 @@
         </fileSet>
         <fileSet>
           <directory>${project.build.directory}/../lib</directory>
-          <outputDirectory>lib/lib</outputDirectory>
+          <outputDirectory>lib</outputDirectory>
           <includes>
             <include>*.jar</include>
           </includes>
         </fileSet>
         <fileSet>
           <directory>${project.build.directory}/dist</directory>
-          <outputDirectory>lib/lib</outputDirectory>
+          <outputDirectory>lib</outputDirectory>
           <includes>
             <include>*.jar</include>
           </includes>

opengrok-indexer/pom.xml

@@ -341,7 +341,6 @@ Portions Copyright (c) 2020-2020, Lubos Kosco <[email protected]>.
                         <manifest>
                             <mainClass>org.opengrok.indexer.index.Indexer</mainClass>
                             <addClasspath>true</addClasspath>
-                            <classpathPrefix>lib/</classpathPrefix>
                         </manifest>
                         <manifestEntries>
                         </manifestEntries>