make following symlinks configurable in plexus-archiver

default is still true here, will be false when submitting upstream

REQUIRES a version of plexus-io with the following PR merged:
codehaus-plexus/plexus-io#38

advances codehaus-plexus#160
even if I don’t know how to make this configurable from Maven

src/main/java/org/codehaus/plexus/archiver/AbstractArchiver.java

@@ -136,6 +136,11 @@ public abstract class AbstractArchiver
      */
     private String overrideGroupName;
 
+    /**
+     * @since 4.3.1
+     */
+    private boolean followSymlinks = true;
+
     // contextualized.
     private ArchiverManager archiverManager;
 
@@ -367,8 +372,8 @@ public void addFileSet( @Nonnull final FileSet fileSet )
         // The PlexusIoFileResourceCollection contains platform-specific File.separatorChar which
         // is an interesting cause of grief, see PLXCOMP-192
         final PlexusIoFileResourceCollection collection = new PlexusIoFileResourceCollection();
-        collection.setFollowingSymLinks( true );
-        getLogger().info( "setFollowingSymLinks done" );
+        collection.setFollowingSymLinks( followSymlinks );
+        getLogger().info( "following (archiver): " + followSymlinks );
 
         collection.setIncludes( fileSet.getIncludes() );
         collection.setExcludes( fileSet.getExcludes() );
@@ -1299,4 +1304,14 @@ protected Date normalizeLastModifiedDate( Date lastModifiedDate )
     {
         return lastModifiedDate;
     }
+
+    boolean getFollowSymlinks()
+    {
+        return followSymlinks;
+    }
+
+    void setFollowSymlinks( boolean follow )
+    {
+        followSymlinks = follow;
+    }
 }

src/main/java/org/codehaus/plexus/archiver/Archiver.java

@@ -476,4 +476,14 @@ ResourceIterator getResources()
      * @since 4.2.0
      */
     void configureReproducible( Date lastModifiedDate );
+
+    /**
+     * @since 4.3.1
+     */
+    boolean getFollowSymlinks();
+
+    /**
+     * @since 4.3.1
+     */
+    void setFollowSymlinks( boolean follow );
 }