fixed mysql tag to give values for ?# # and field name using #n.

tests/testdb.jet

@@ -5,5 +5,10 @@
   <whilerow name="index" count="10" sessionid="1">
    $[1.id] $[1.text] $[1.value]
   </whilerow>
+Number of rows: $[1.#]
+Number of columns: $[1.?#]
+<for name="ix" start="1" end="$[1.?#]" step="1">
+Field $[ix] is $[1.#$[ix]]
+</for>
  </mysql>
 </jet>