Romain Guy 8168396d1a Fix rendering issues with animated layers.
Bug #3385247

- The layer's alpha was interpreted in the wrong range 0..255 instead of 0..1
- 9-patches would not correctly dirty the layer region, the generated mesh
  was incorrect

Change-Id: I4916249bedcdb0794929f3796bd17854971efc88
2011-01-24 20:40:18 -08:00
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