Bumping tycho version

bumping aspectj

adding complianceLevel
Adds a test which checks sbt reorders libs on classpath

The commment added in 6c9516bcc616953d906e1565f9f458b4f4c8ced9
was not explicit enough, which led m2eclipse-scala to reorder the classpath
manually..
Merge pull request #806 from huitseeker/sbt-reordering-backport

Backports PR #804 to 3.0.x-2.10