+ in fill_script_path() : scipt_path and script_info are filled, removing leadin dot

+ in _cgi_pos() : check validity of extension if it's only alpha characters
+ severall pbm appears

srcs/cgi-bin/cgi.sh

@@ -0,0 +1,4 @@
+#! /usr/bash
+echo "status: 100\r\n"
+echo "\r\n\r\n"
+echo "hiii"