Bump to Lucene 5.2.1

Luca Milanesio

2015-09-09 e618eb051246e7941dc2964a5038587c9d45d1d2

 src/main/java/com/gitblit/servlet/RawServlet.java

@@ -468,7 +468,7 @@
            served = true;
         }
      } finally {
         tw.release();
         tw.close();
         rw.dispose();
      }