drag able etk_scrolled_view

[Tick]

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Hi Raster,
~    I had wrote some patches make Etk_Scrolled_View  drag able.
The patches are on 
http://people.openmoko.org/tick/motion_scrolled_view/patches/
After patching these patches you can make the etk_scrolled_view 
scrollable with finger press + drag.
A little bit like kinetic_scrollpane in EWL.
If you drag the scrolled_view fast and release it will continue drag for 
a while and the slow down. It will bounce if reaching the boundary.

Would you take a look of this.
If you think it's okay, would you commit that for me?
Or point out what I should fix? Thanks a lot.

Cheers,
Tick

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