Added MySQL specific upgrade statements, required for updating a MySQL install.
Added MySQL specific upgrade statements, required for updating a MySQL install.

liquidJbilling/LT-Jbilling-MsgQ-3.1,liquidJbilling/LT-Jbilling-MsgQ-3.1,PaloAlto/jbilling,liquidJbilling/LT-Jbilling-MsgQ-3.1,PaloAlto/jbilling,liquidJbilling/LT-Jbilling-MsgQ-3.1