Fix postproc:calibration for on_touch_up
Fix postproc:calibration for on_touch_up

on_touch_down and on_touch_move set a new position to the touch, so they need processing, but on_touch_up does not, so it would make the event have calibration applied twice.

How to reproduce:

```
from kivy.app import App
from kivy.uix.widget import Widget

class Test(App):
    def build(self):
        return DebugWidget()

class DebugWidget(Widget):
    def on_touch_down(self, touch):
        print 'on_touch_{}: x={}, y={}'.format('down', touch.x, touch.y)
        print touch.device, touch.ud['calibration:frame']

    def on_touch_move(self, touch):
        print 'on_touch_{}: x={}, y={}'.format('move', touch.x, touch.y)
        print touch.device, touch.ud['calibration:frame']

    def on_touch_up(self, touch):
        print 'on_touch_{}: x={}, y={}'.format('up', touch.x, touch.y)
        print touch.device, touch.ud['calibration:frame']

Test().run()
```
Cheaterman/kivy,jegger/kivy,rnixx/kivy,aron-bordin/kivy,bionoid/kivy,janssen/kivy,matham/kivy,CuriousLearner/kivy,akshayaurora/kivy,vitorio/kivy,janssen/kivy,cbenhagen/kivy,andnovar/kivy,manthansharma/kivy,cbenhagen/kivy,Cheaterman/kivy,manthansharma/kivy,kived/kivy,kivy/kivy,autosportlabs/kivy,akshayaurora/kivy,cbenhagen/kivy,jkankiewicz/kivy,janssen/kivy,jegger/kivy,jkankiewicz/kivy,el-ethan/kivy,bionoid/kivy,akshayaurora/kivy,el-ethan/kivy,inclement/kivy,jkankiewicz/kivy,aron-bordin/kivy,KeyWeeUsr/kivy,manthansharma/kivy,jegger/kivy,LogicalDash/kivy,rafalo1333/kivy,KeyWeeUsr/kivy,CuriousLearner/kivy,darkopevec/kivy,darkopevec/kivy,autosportlabs/kivy,andnovar/kivy,rnixx/kivy,CuriousLearner/kivy,matham/kivy,el-ethan/kivy,KeyWeeUsr/kivy,vitorio/kivy,KeyWeeUsr/kivy,kivy/kivy,kivy/kivy,tony/kivy,LogicalDash/kivy,jkankiewicz/kivy,bionoid/kivy,rafalo1333/kivy,Cheaterman/kivy,rafalo1333/kivy,autosportlabs/kivy,LogicalDash/kivy,janssen/kivy,LogicalDash/kivy,arlowhite/kivy,jegger/kivy,bionoid/kivy,arlowhite/kivy,manthansharma/kivy,tony/kivy,tony/kivy,darkopevec/kivy,kived/kivy,inclement/kivy,darkopevec/kivy,matham/kivy,kived/kivy,vitorio/kivy,rnixx/kivy,arlowhite/kivy,andnovar/kivy,matham/kivy,Cheaterman/kivy,inclement/kivy,aron-bordin/kivy,aron-bordin/kivy