Changes 2.3.8

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*                   Qt/Embedded-specific changes                           *
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- Add keypad navigation.  Allows navigation of all controls using only
  arrows, Key_Select and Key_Back keys.

- Add shared pixmap caching to QPixmapCache.  Pixmaps are now shared between
  processes.

- Rendered font data is now also shared between processes.

- Make showFullScreen() display the window on top of all others, except
  its children.