[RJ-GD] Added check for rectangles

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
[*] Updated build configuration
  - Updated to Tycho-0.16
  - Updated execution environment to JavaSE-1.6
  - Updated mvn plugin versions
  - Removed workaround for license-feature

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
[*] Updated declarations for release RJ-1.1.2

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>