Bug 459873 - Releng: Update to Tycho-0.23.1, Unify Target Platforms

- Tycho-0.23 makes multiple Hudson builds in parallel more robust
- Use SWTbot-2.2.1 on Eclipse-3.8 to keep target dependencies clean
- Bring *.target files in sync with pom-config.xml for interactive use
- Add OSX .DS_Store to .gitignore

Change-Id: I9784e6cc4820662c885930858894f9fba82fdcfe
Signed-off-by: Martin Oberhuber <mober.at+eclipse@gmail.com>
9 files changed