form : add the \DateTime to be namespace compliant

git-svn-id: https://svn.fournier38.fr/svn/ProgSVN/trunk@5846 bf3deb0d-5f1a-0410-827f-c0cc1f45334c

form.php

@@ -584,7 +584,7 @@ class form
   public function convertDate ($inputDate, $inputFormat, $outputFormat)
   // {{{
   {
-    $date = DateTime::CreateFromFormat ($inputFormat, $inputDate);
+    $date = \DateTime::CreateFromFormat ($inputFormat, $inputDate);
     if ($date === false)
       return $inputDate;
     $errors = $date->getLastErrors();