Added command stack wrappers and fixed up nread and removed dead code from nserver

Removed direct access from token.c

conman.c

@@ -2437,4 +2437,43 @@ void SCSetProtocolID(SConnection *pCon, int id)
   }
   pCon->iProtocolID = id;
 }
+/*--------------------------------------------------------*/
+void SCCostaLock(SConnection *pCon)
+{
+  if (!VerifyConnection(pCon)) {
+    return;
+  }
+  CostaLock(pCon->pStack);
+}
+/*---------------------------------------------------------*/
+void SCCostaUnLock(SConnection *pCon){
+  if (!VerifyConnection(pCon)) {
+    return;
+  }
+  CostaUnlock(pCon->pStack);
+}
+/*---------------------------------------------------------*/
+int SCCostaLocked(SConnection *pCon)
+{
+  if (!VerifyConnection(pCon)) {
+    return 0;
+  }
+  return CostaLocked(pCon->pStack);
+}
+/*----------------------------------------------------------*/
+int SCCostaTop(SConnection *pCon, char *command)
+{
+  if (!VerifyConnection(pCon)) {
+    return 0;
+  }
+  return CostaTop(pCon->pStack, command);
+}
+/*----------------------------------------------------------*/
+void SCSetGrab(SConnection *pCon, int iGrab)
+{
+  if (!VerifyConnection(pCon)) {
+    return;
+  }
+  pCon->iGrab = iGrab;
+}