Only redirect System.out and System.err if requested by environment variable.

Change-Id: Ief5f2b1e3f2d4ab984f1a0d14083707044dfad9a
Updated vendor information.

Change-Id: I8dc2bf5d31831becddd140baa53f5bc28e55890f
Use logback instead of log4j as logging backend.

Change-Id: I741204bf09074c9aa85a00c6d604726581aa853c