am 9189cabb: * Moved supports-density tag under manifest * Refactored...

am 9189cabb: * Moved supports-density tag under manifest * Refactored Compatibility code   * Added CompatibilityInfo class   * Removed getApplicationScale from Context   * Added Resources#getCompatibilityInfo so that RootView can get the compatibility info w/o going through Context * Expandable support   * Added expandable tag under manifest   * Old application w/o expandable is given the default screen size  ([320, 480] x density).   * The non-expandable window is centered.

Merge commit '9189cabb'

* commit '9189cabb':
  * Moved supports-density tag under manifest