Follow up r17153 part1 revert map_athena.conf deletion to keep log history track, transfert it to msg_conf, fix vcc warnings

git-svn-id: https://rathena.svn.sourceforge.net/svnroot/rathena/trunk@17154 54d463be-8e91-2dee-dedb-b68131a5f0ec
Follow up r17153 part2 replace map_athena.conf by map_msg.conf as default expected

git-svn-id: https://rathena.svn.sourceforge.net/svnroot/rathena/trunk@17155 54d463be-8e91-2dee-dedb-b68131a5f0ec