Tell the libmysqlclient to read the sections [freeradius]

	Tell the libmysqlclient to read the sections [freeradius]
	and [client] from file "my.cnf". This makes possible to
	define any options specific to MySQL which are not available
	through the "sql.conf".

	For example, in the file "my.cnf":

	# Options only for FreeRADIUS
	[freeradius]
	net_read_timeout = 10
	net_write_timeout = 20

	# Note that the client group is always read.
	[client]
	socket = /path/to/mysqld.sock