[Android][Manifest] Support 'orientation' member

Packaging tool support the 'orientation' member of the manifest:
http://w3c.github.io/manifest/#orientation-member

BUG=https://crosswalk-project.org/jira/browse/XWALK-2022
These are not enough, `portrait-secondary` should be mapped to `reversePortrait`, maybe it's better to use a dictionary for this.