Access joint by name in Robot::setJointBounds and Problem::lockDof.
Homogeneize data-structures

  Replace nameSeq by Names_t.
Add accessors for maxIterations and errorThreshold.
Add an interface method to set numerical constraints in ConfigProjector

  - Problem::setNumericalConstraints.
Cosmetic changes

  - fix documentation main page.
Put code into try catch block when running corba request.
error message correction
error message correction
insertion method createPositionConstraints equals to applyConstraints
added createPositionConstraints in problem.idl file
Merge branch 'master' of github.com:orthez/hpp-corbaserver
implementing createPositionConstraints 1
update relative position
Merge branch 'master' into nassime
backward compatibility to old hpp::core without setThreshold
Merge branch 'nassime'