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_bad_headers.cpp

@@ -0,0 +1,22 @@
+
+# include "cgi_utils.hpp"
+
+int main (int ac, char **av, char ** env)
+{
+	std::string	http_header;
+	std::string	http_body;
+	std::string	http_status;
+	std::string	rq_body;
+
+	std::cin >> rq_body;
+
+	(void)ac;
+	(void)av;
+
+	fill_response_basic(env, http_body, http_header, rq_body);
+
+	std::cout << "Bad-Headers: wrong" << CRLF CRLF << http_body;
+
+	return 0;
+}
+