Reduce dependency to boost.

include/hpp/manipulation/fwd.hh

include/hpp/manipulation/graph-path-validation.hh

include/hpp/manipulation/graph/fwd.hh

include/hpp/manipulation/graph/graph.hh

include/hpp/manipulation/graph/helper.hh

include/hpp/manipulation/graph/state.hh

include/hpp/manipulation/graph/statistics.hh

...pulation/path-optimization/enforce-transition-semantic.hh

...ude/hpp/manipulation/path-optimization/random-shortcut.hh

...p/manipulation/path-optimization/spline-gradient-based.hh

.../hpp/manipulation/path-planner/end-effector-trajectory.hh

include/hpp/manipulation/serialization.hh

...p/manipulation/steering-method/end-effector-trajectory.hh

include/hpp/manipulation/steering-method/fwd.hh

src/connected-component.cc

src/graph/edge.cc

src/graph/helper.cc

src/handle.cc

src/manipulation-planner.cc

src/path-planner/end-effector-trajectory.cc