some corrections for estimation of zShift in continuous tracking
some corrections for estimation of zShift in continuous tracking

shahor02/AliRoot,ALICEHLT/AliRoot,alisw/AliRoot,coppedis/AliRoot,shahor02/AliRoot,alisw/AliRoot,ALICEHLT/AliRoot,miranov25/AliRoot,miranov25/AliRoot,alisw/AliRoot,miranov25/AliRoot,miranov25/AliRoot,sebaleh/AliRoot,miranov25/AliRoot,shahor02/AliRoot,coppedis/AliRoot,alisw/AliRoot,shahor02/AliRoot,shahor02/AliRoot,coppedis/AliRoot,coppedis/AliRoot,alisw/AliRoot,coppedis/AliRoot,coppedis/AliRoot,alisw/AliRoot,sebaleh/AliRoot,ALICEHLT/AliRoot,ALICEHLT/AliRoot,sebaleh/AliRoot,sebaleh/AliRoot,ALICEHLT/AliRoot,sebaleh/AliRoot,ALICEHLT/AliRoot,miranov25/AliRoot,shahor02/AliRoot,ALICEHLT/AliRoot,sebaleh/AliRoot,miranov25/AliRoot,shahor02/AliRoot,coppedis/AliRoot,coppedis/AliRoot,alisw/AliRoot,sebaleh/AliRoot,alisw/AliRoot,miranov25/AliRoot