updated release notes

docs/docs/release_notes.xml

@@ -11,6 +11,19 @@
 <!-- *******************************************************************************  -->
 
 <current>
+New Stuff:
+
+Non-Backwards Compatible Changes:
+
+Bug fixes:
+
+Other:
+
+</current>
+
+<!-- *******************************************************************************  -->
+
+<old name="17.46" date="Apr 11, 2012">
 New Stuff:
    - Image Processing:
       - Added the option to make the features generated by poly_image rotationally 
@@ -62,7 +75,7 @@ Other:
      data for the object detection tools as well as how this data can be used.
      See the train_object_detector.cpp example for details.
 
-</current>
+</old>
 
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