Thunderbird 24.4.0 -> 24.5.0

thunderbird.xml

@@ -3,7 +3,11 @@
 
 <package id="thunderbird" name="Mozilla Thunderbird" revision="%version%.2" reboot="false" priority="0">
 
- <variable name="version" value="24.4.0" />  
+	<!-- NB: we've had problems with major version bumps which sometimes change the format of options
+			 we add in chemistry-prefs.js. Thus, we tie that to a version, and please test carefully when
+       upgrading -->
+
+ <variable name="version" value="24.5.0" />  
  <check type="uninstall" condition="exists" path="Mozilla Thunderbird %version%.*" />
 
   <install cmd='"%software%\thunderbird\Thunderbird Setup %version%.exe" -ms' />