Removed WGI_RESPONSE.write (..)

Replaced any internal call to WGI_RESPONSE.write () by the associated implementation (i.e  output.put_string (...)  )
Added WGI_OUTPUT_STREAM.put_crlf

Renamed WSF_RESPONSE.put_response (a_message) as  `send (a_message)'
WSF_RESPONSE_MESSAGE.send_to (res)  is now exported only to WSF_RESPONSE

library/server/ewsgi/src/implementation/wgi_response_stream.e

@@ -48,15 +48,6 @@ feature -- Status report
 			Result := status_is_set and header_committed
 		end
 
-feature {NONE} -- Core output operation
-
-	write (s: READABLE_STRING_8)
-			-- Send the content of `s'
-			-- this can be used for header and body			
-		do
-			output.put_string (s)
-		end
-
 feature -- Status setting
 
 	status_is_set: BOOLEAN
@@ -81,8 +72,8 @@ feature -- Header output operation
 
 	put_header_text (a_text: READABLE_STRING_8)
 		do
-			write (a_text)
-			write (crlf)
+			output.put_string (a_text)
+			output.put_crlf
 			header_committed := True
 		end
 
@@ -126,9 +117,6 @@ feature -- Output operation
 
 feature {NONE} -- Implementation: Access
 
-	crlf: STRING = "%R%N"
-			-- End of header
-
 	output: WGI_OUTPUT_STREAM
 			-- Server output channel