Add UAST prebuilt as a plain .jar library

Until now the UAST library has been checked in as an m2
artifact. However, publishing has been difficult since these
can't reuse the normal Gradle publishing signing support.

This CL checks it in as a plain .jar instead, and a separate
tools/base library will wrap this jar for lint usage.

Change-Id: I84e6e9927d5f2921c5e3bb15159ac60c2a9f1be2
5 files changed