Changed the WGI_INPUT_STREAM and WGI_OUTPUT_STREAM interfaces

main changes for existing code  `read_stream' is renamed `read_string'

library/server/ewsgi/connectors/cgi/src/wgi_cgi_input_stream.e

@@ -10,10 +10,15 @@ class
 
 inherit
 	WGI_INPUT_STREAM
+		undefine
+			read_to_string
+		end
 
 	CONSOLE
 		rename
-			make as console_make
+			make as console_make,
+			read_stream as read_string,
+			end_of_file as end_of_input
 		end
 
 create

library/server/ewsgi/connectors/cgi/src/wgi_cgi_output_stream.e

@@ -10,9 +10,6 @@ class
 
 inherit
 	WGI_OUTPUT_STREAM
-		undefine
-			flush
-		end
 
 	CONSOLE
 		rename