Added WSF_CUSTOM_HEADER_FILTER which provide a convenient way to add a custom header from a filter.

Added to wsf_extension WSF_DEBUG_FILTER and WSF_DEBUG_HANDLER that could be convenient to test specific requests
Restructured wsf_extension

library/server/wsf/router/filter/wsf_custom_header_filter.e

@@ -0,0 +1,66 @@
+note
+	description: "Summary description for {WSF_CUSTOM_HEADER_FILTER}."
+	date: "$Date: 2013-05-23 21:54:29 +0200 (jeu., 23 mai 2013) $"
+	revision: "$Revision: 92585 $"
+
+class
+	WSF_CUSTOM_HEADER_FILTER
+
+inherit
+	WSF_FILTER
+
+create
+	make
+
+feature {NONE} -- Initialization
+
+	make (n: INTEGER)
+		do
+			create custom_header.make_with_count (n)
+		end
+
+feature -- Access
+
+	custom_header: HTTP_HEADER
+
+feature -- Basic operations
+
+	execute (req: WSF_REQUEST; res: WSF_RESPONSE)
+			-- Execute the filter
+		do
+			res.put_header_lines (custom_header)
+			execute_next (req, res)
+		end
+
+note
+	copyright: "Copyright (c) 1984-2013, Eiffel Software"
+	license: "GPL version 2 (see http://www.eiffel.com/licensing/gpl.txt)"
+	licensing_options: "http://www.eiffel.com/licensing"
+	copying: "[
+			This file is part of Eiffel Software's Eiffel Development Environment.
+			
+			Eiffel Software's Eiffel Development Environment is free
+			software; you can redistribute it and/or modify it under
+			the terms of the GNU General Public License as published
+			by the Free Software Foundation, version 2 of the License
+			(available at the URL listed under "license" above).
+			
+			Eiffel Software's Eiffel Development Environment is
+			distributed in the hope that it will be useful, but
+			WITHOUT ANY WARRANTY; without even the implied warranty
+			of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+			See the GNU General Public License for more details.
+			
+			You should have received a copy of the GNU General Public
+			License along with Eiffel Software's Eiffel Development
+			Environment; if not, write to the Free Software Foundation,
+			Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+		]"
+	source: "[
+			Eiffel Software
+			5949 Hollister Ave., Goleta, CA 93117 USA
+			Telephone 805-685-1006, Fax 805-685-6869
+			Website http://www.eiffel.com
+			Customer support http://support.eiffel.com
+		]"
+end