- Implemented defpos for multiple motors

- Implemented automatic backup on parameter change
- Implemented silent restore
- Cleaned a couple of unused flags from connection object

drive.c

@@ -131,7 +131,6 @@
         if(SCGetInterrupt(pCon) == eAbortOperation)
         {
           SCSetInterrupt(pCon,eContinue);
-          SCSetError(pCon,OKOK);
           sprintf(pBueffel,"Driving %s aborted at %9.3f",name, fPos);
           SCWrite(pCon,pBueffel,eStatus);
         }