- return always a full path to prevent problems

bin/slubsipbuilderbagit.pl

@@ -286,7 +286,7 @@ package SLUB::LZA::SIPBuilderBagIt;
             say "Rebuilding XSL directory '$xsl_dir'";
             $xsl_dir->mkpath() || confess("could not mkdir '$xsl_dir', $!");
         }
-        return $xsl_dir;
+        return $xsl_dir->absolute();
     }
 
     sub check_marc21_utility($$){