#1138 Renamed DSDPInternal --> DsdpInterface
#1138 Renamed CplexInternal --> CplexInterface
#1138 Renamed KnitroInternal --> KnitroInterface
#1138 Renamed OOQPInternal --> OoqpInterface
#1138 Renamed SnoptInternal --> SnoptInterface
#1138 Renamed SQICInternal --> SqicInterface
#1138 Renamed WorhpInternal --> WorhpInterface