- added /etc/mysqld.conf usage instead of mysqld switches

- added /etc/mysqld.conf usage instead of mysqld switches
- hostname is used instead of resolveip;
- more sanity checks;
- mysql database is created by mysqld instead of mkdired it manually;
- removed creation of anonymous access to test* databases;
- changed default created mysqluser to mysql, not root;
- added mysql_logrotate mysqluser with perm to flush logs (needed
  for log rotating);
- some cosmetics.

Changed files:
    mysql.init -> 1.13