more script tests

+ add cgi checks for error in script output
+ fix script_path relative to absolute
+ cgi makefile more efficient

srcs/cgi-bin/cgi_cpp_len.cpp

@@ -5,11 +5,14 @@ int main (int ac, char **av, char ** env)
 {
 	std::string                                 http_header;
 	std::string                                 http_body;
+	std::string	rq_body;
+
+	std::cin >> rq_body;
 
 	(void)ac;
 	(void)av;
 
-	fill_response_basic(env, http_body, http_header);
+	fill_response_basic(env, http_body, http_header, rq_body);
 
 	http_header += "Content-Length: " + itos(http_body.size());