* fixups to SlackBuilds. requiredbuilder does the wrong thing, and

thinks that java is perl! This isn't really a big deal,
      the file format is simple enough and the requirements are known.

router/java/src/net/i2p/router/RouterVersion.java

@@ -18,7 +18,7 @@ public class RouterVersion {
     /** deprecated */
     public final static String ID = "Monotone";
     public final static String VERSION = CoreVersion.VERSION;
-    public final static long BUILD = 19;
+    public final static long BUILD = 20;
     /** for example "-test" */
     public final static String EXTRA = "";
     public final static String FULL_VERSION = VERSION + "-" + BUILD + EXTRA;