Add EXTRA version "win1" in prep for Windows-only point release.

We don't want to bump BUILD as it could cause confusion,
and would cause all installs to attempt update via torrent.

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

@@ -21,7 +21,7 @@ public class RouterVersion {
     public final static long BUILD = 0;
 
     /** for example "-test" */
-    public final static String EXTRA = "";
+    public final static String EXTRA = "-win1";
     public final static String FULL_VERSION = VERSION + "-" + BUILD + EXTRA;
     public static void main(String args[]) {
         System.out.println("I2P Router version: " + FULL_VERSION);