Small error in product operator of two points !
Merge pull request #36 from kerautret/debugExport

Small error in product operator of two points !
updating code for DGtal 0.6
updating code for DGtal 0.6
Merge pull request #37 from kerautret/debugDGtalVisu

updating code for DGtal 0.6 (now incompatible with previous versions)
cherry pick + merge
Merge pull request #38 from kerautret/TestCP

cherry pick + merge
Merge with master branch to prepare merge from master