CentOS 6 installs libmysqlclient.so.16 and friends without me asking

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http://unix.stackexchange.com – Whilst trying to resolve a dependency issue with MySQL's libmysqlclient libraries on one of my CentOS 6 MySQL servers I was surprised to discover the following libraries installed in /usr/lib/mysql: libmysqlclient_r.so -> libmysqlclient_r.so.16.0.0 libmysqlclient_r.so.16 -> libmysqlclient_r.so.16.0.0 libmysqlclient_r.so.16.0.0 libmysqlclient.so -> libmysqlclient.so.16.0.0 libmysqlclient.so.16 -> libmysqlclient.so.16.0.0 libmysqlclient.so.16.0.0 The reason I was surprised was because this server has only ever had MySQL 5.5 installed which was built from source. Building MySQL 5.5 (HowTos)