Open up data structure to child classes

Author: loopj

src/com/loopj/android/http/RequestParams.java

@@ -32,7 +32,7 @@
 public class RequestParams {
     private static String ENCODING = "UTF-8";
 
-    private ConcurrentHashMap<String,String> urlParams;
+    protected ConcurrentHashMap<String,String> urlParams;
 
     public RequestParams() {
         init();