Bug 516330 - Releng: Restore Tycho-0.22 for Building with Java 7

- Make Mars the defaut target to build against to support Java 7
  along with cdt native serial for a full build
- Cleanup: Fix indentation
- Add Oxygen Profile

Change-Id: I21b1e9b0fb905c8c50889e9697f4d11231685945
Signed-off-by: Martin Oberhuber <mober.at+eclipse@gmail.com>