old: proto object PDO::prepare(string statment [, array driver_options [, string classname ]])
now: proto object PDO::prepare(string statment [, array options])
param 'classname' and and 'ctor_args' are now set through options
using index PDO_ATTR_STATEMENT_CLASS
- Change all deriver_options parameters to 'options' to reflect the fact
that they may contain statement as well as driver specific flags