Integrated low level IP Port driver from DLS

Integrated the low level asyn IP Port driver from the Diamond Light
Source so that StreamDevices can use it as well.

src/turboPmacController.cpp

@@ -140,7 +140,7 @@ asynStatus turboPmacController::writeRead(int axisNo, const char *command,
     asynStatus status = asynSuccess;
     asynStatus paramLibStatus = asynSuccess;
     asynStatus timeoutStatus = asynSuccess;
-    char fullCommand[MAXBUF_] = {0};
+    // char fullCommand[MAXBUF_] = {0};
     char drvMessageText[MAXBUF_] = {0};
     char modResponse[MAXBUF_] = {0};
     int motorStatusProblem = 0;