Adjust TradeFed build.

Fixes include:
- Rename TradeFed jars
- Bundle dependent jars within TradeFed.jar itself. This saves users of
TradeFed from having to adjust their own makefiles each time a TradeFed core
brings in another dependency.
- Set uses-sdk in the TradeFedTestApp to a low number, to allow the functional
tests to run on older platforms.

Change-Id: Ie2ee1686a75a191a220a290b89464ff5f72477ff
7 files changed