Backing out bug 285094 until bug 285658 is fixed, so nightly builds will install

extensions/xforms/package/install.rdf

@@ -10,7 +10,7 @@
       <!-- Firefox -->
       <Description>
         <em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id>
-        <em:minVersion>1.0+</em:minVersion>
+        <em:minVersion>1.0</em:minVersion>
         <em:maxVersion>1.0+</em:maxVersion>
       </Description>
     </em:targetApplication>