- vector: ensure separators don't overlap with other rectangles so that

they render correctly when have RGBA alpha channel
- GUI: update_preview() after Data Dialog return to ensure preview in sync
- GUI: add automatic info feedback to "Automatic" combo item of size/row/height
  comboboxes
- backend_qt: always call getMaxRectsRightBottom() for render fudge; use
  ZBarcode_Clear() instead of ZBarcode_Delete() after 1st call
- update BWIPP to latest & add some MICROQR tests to exercise optimize change

frontend_qt/grpAztec.ui

@@ -39,6 +39,16 @@ be set based on data</string>
        </attribute>
       </widget>
      </item>
+     <item row="0" column="1">
+      <widget class="QLineEdit" name="txtAztecAutoInfo">
+       <property name="frame">
+        <bool>false</bool>
+       </property>
+       <property name="readonly">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
      <item row="1" column="0">
       <widget class="QRadioButton" name="radAztecSize">
        <property name="text">