--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://svn.code.sf.net/p/rathena/svn/trunk@17144 54d463be-8e91-2dee-dedb-b68131a5f0ec
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