[ubuntu] MySQL configuration files (16.10)

I just installed Ubuntu 16.10 and I'm confused by the number and similarity of configuration files provided by the package for MySQL:

/etc/mysql/conf.d/mysql.cnf
/etc/mysql/conf.d/mysqldump.cnf
/etc/mysql/mysql.conf.d/mysqld.cnf
/etc/mysql/mysql.conf.d/mysqld_safe_syslog.cnf
/etc/mysql/debian.cnf
/etc/mysql/debian-start
/etc/mysql/my.cnf
/etc/mysql/my.cnf.fallback
/etc/mysql/mysql.cnf

It honestly looks like the package maintainer was trying to mess with us mortal users. Can somebody please explain the hierarchy and precedence?