Don't warn when the ZGadflyDA is imported by Zope startup code.

lib/python/Products/ZGadflyDA/__init__.py

@@ -15,9 +15,12 @@
 $Id$
 """
 
-import warnings
-warnings.warn('Using Gadfly and ZGadflyDA is deprecated. The module will be '
-              'removed in Zope 2.11)', 
+# Don't warn when the product is imported by the startup code
+import sys
+if sys._getframe(1).f_code.co_name != 'import_product': # OFS.Application
+    import warnings
+    warnings.warn('Using Gadfly and ZGadflyDA is deprecated. '
+                  'The module will be removed in Zope 2.11)',
                   DeprecationWarning,
                   stacklevel=2)