A 24-Week,Int.,Rand.,Double-blind,Parallel-group,Multi-centre, Plac.-controlled Phase III Study with a 24-Wk Ext.Per.to Eval.the Efficacy and Safety of Dapagliflozin in Comb.with Glimepiride (a Sulphonylurea) in Subjects with Type2 Diab.who Have Inadeq. Glycaemic Control on Glimepiride Therapy Alone