Queue additional warning filters at the beginning of the queue in ord…

…er to allow overrides.

CHANGES.rst

@@ -11,6 +11,9 @@ http://docs.zope.org/zope2/
 Bugs Fixed
 ++++++++++
 
+- Queue additional warning filters at the beginning of the queue in order to
+  allow overrides.
+
 - Issue #16: prevent leaked connections when broken ``EndRequestEvent``
   subscribers raise exceptions.
 

src/Zope2/Startup/warnfilter.py

@@ -51,5 +51,5 @@ def warning_filter_handler(section):
     import warnings
     # add the warning filter
     warnings.filterwarnings(section.action, section.message, section.category,
-                            section.module, section.lineno, 1)
+                            section.module, section.lineno)
     return section