-Follow up r17143
--Improve Autocheckconf, now checking if port already in used in system or duplicated in config
--Improve --f filename option, now cehcking if file exist before processing
--Add handling if given filename is invalide (structure not found).
--Fix filecheck, not checking if could be read by user before usage.
--Upd default sql_host from 127.0.0.1 to localhost by default for CLI usage.
 


git-svn-id: https://rathena.svn.sourceforge.net/svnroot/rathena/trunk@17144 54d463be-8e91-2dee-dedb-b68131a5f0ec