Merge back master branch.

CMakeLists.txt

cmake

doc/dg-shell-plugin.pod.in

doc/dg-shell.pod.in

include/CMakeLists.txt

include/dynamic-graph/all-signals.h

include/dynamic-graph/contiifstream.h

include/dynamic-graph/debug.h

include/dynamic-graph/dynamic-graph-api.h

include/dynamic-graph/entity.h

include/dynamic-graph/exception-abstract.h

include/dynamic-graph/exception-factory.h

include/dynamic-graph/exception-signal.h

include/dynamic-graph/exception-traces.h

include/dynamic-graph/factory.h

include/dynamic-graph/functions.h

include/dynamic-graph/fwd.hh

include/dynamic-graph/import.h

include/dynamic-graph/interpreter-helper.h

include/dynamic-graph/interpreter.h