Deprecated platform Android testing APIs

- Deprecated most android.test.* APIs
- Kept ProviderTestCase2 and LoaderTestCase since we don't have a
replacement yet
- Deprecated android.test.suitebuilder
- Added Javadoc to all deprecated APIs with links to corresponding
Android Testing Support Library APIs
- Removed all trailing whitespace

Change-Id: Iab0699f56c286e29b5af46f7580bec5f29955fd3