Andorid:TIMOB-6659 & TIMOB-5379, Gingerbread Alpha animation anomalies.

See JIRA for more notes.  Test cases are the fail cases.

[TIMOB-6659](https://jira.appcelerator.org/browse/TIMOB-6659): Add workaround in Animation library for anomaly
occurring when alpha animation is the only animation being
done.

[TIMOB-5379](https://jira.appcelerator.org/browse/TIMOB-5379): Allow animation library to handle all alpha
changes.