Add transaction-related functions
Add transaction-related functions

Let's implement some transaction-related compatible with old ADODB methods

avdevs/concrete5,TimDix/concrete5,matt9mg/concrete5,TimDix/concrete5,MichaelMaar/concrete5,avdevs/concrete5,MichaelMaar/concrete5,matt9mg/concrete5,TimDix/concrete5,avdevs/concrete5,matt9mg/concrete5,MichaelMaar/concrete5