P25 - added parsing of packet payload data for confirmed PDUs.

src/bits/BitSetBuffer.java

@@ -107,12 +107,25 @@ public class BitSetBuffer extends BitSet
     {
         return mPointer;
     }
-    
+
+    /**
+     * Sets the pointer to a specific value
+     * @param index
+     */
     public void setPointer( int index )
     {
     	mPointer = index;
     }
 
+    /**
+     * Moves the current pointer position left (negative adjustment) or 
+     * right (positive adjustment)
+     */
+    public void adjustPointer( int adjustment )
+    {
+    	mPointer += adjustment;
+    }
+
     /**
      * Static method to construct a new BitSetBuffer, preloaded with the bits
      * from the preload parameter, and then filled with the bits from the