JString fix to compress initial assignment JSON.

JString.h

@@ -81,12 +81,10 @@ namespace coreutils {
 	 return Proxy(*this, key);
       }
       
-      JString & operator=(coreutils:: ZString value) {	 
-	 setSize(value.getLength());
-	 memcpy(data, value.getData(), value.getLength());
-	 length = value.getLength();
-	 return *this;
-      }
+      JString & operator=(coreutils:: ZString value);
+      
+    private:
+      void removeWhitespace();
       
    };