Changed package name(cherry picked from commit 2f065ea6cd762542e7a4a155fca9def5706a0c74)
Added joints debug infrastructure
Set color of Polyline to make it visible
Some minor names refactoring
Joints anchors are tested for equality
Merge branch 'GLES2-AnchorCenter-latest-B2D' into GLES2-AnchorCenter
Some changes due to diffs between B2D versions