changed 'String decode(String raw)' to 'String decodeToString(String raw)'

to eliminate name clash.

core/java/src/net/i2p/data/Base64.java

@@ -60,7 +60,7 @@ public class Base64 {
     }
 
     /** convenience method added by aum */
-    public static String decode(String s) {
+    public static String decodeToString(String s) {
         return new String(decode(s));
     }
     public static byte[] decode(String s) {