restructured ewsgi to avoid too many sub cluster

library/server/ewsgi/src/wgi_input_stream.e

@@ -0,0 +1,41 @@
+note
+	description : "[
+			Objects that represents the input stream
+		]"
+	specification: "EWSGI/connector specification https://github.com/Eiffel-World/Eiffel-Web-Framework/wiki/EWSGI-specification"
+	legal: "See notice at end of class."
+	status: "See notice at end of class."
+	date: "$Date$"
+	revision: "$Revision$"
+
+deferred class
+	WGI_INPUT_STREAM
+
+feature -- Access
+
+	last_string: STRING_8
+			-- Last read string from stream
+		deferred
+		end
+
+feature -- Basic operation
+
+	read_stream (n: INTEGER)
+		require
+			n_positive: n > 0
+		deferred
+		ensure
+			at_max_n: last_string.count <= n
+		end
+
+note
+	copyright: "2011-2011, Eiffel Software and others"
+	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
+	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