* src/signal/signal-caster.cpp: cut long lines for function
	   SignalCaster::registerCast.

     * src/signal/signal-caster.cpp.

     * include/dynamic-graph/signal-caster.h,
     * src/signal/signal-caster.cpp: if a typename is registered several times,
     throw only if pointers to type_info differ. When loading python modules,
     for some reason, global variables are constructed several times.

    * src/signal/signal-caster.cpp.

     * src/signal/signal-caster.cpp.

	    * cmake.

    * unitTesting/CMakeLists.txt,
    * unitTesting/test-value.cpp: new.

    * src/command/value.cpp: operator= should assign this.

    * CMakeLists.txt,
    * include/dynamic-graph/linear-algebra.h,
    * src/CMakeLists.txt.

    For homogeneity, we use jrl-mal for matrices and vectors.

	* include/dynamic-graph/command-getter.h,
	* include/dynamic-graph/command-getter.t.cpp,
	* include/dynamic-graph/command-setter.h,
	* include/dynamic-graph/command-setter.t.cpp,
	* include/dynamic-graph/command.h,
	* src/command/command.cpp.

       * src/command/value.cpp.

    * include/dynamic-graph/value.h,
    * src/command/value.cpp.

       * src/command/command.cpp.

    * include/CMakeLists.txt,
    * include/dynamic-graph/command-setter.t.cpp,
    * include/dynamic-graph/value.h,
    * src/command/value.cpp.

    Types for vector and matrix are boost::numeric::ublas::vector<double>
    and boost::numeric::ublas::matrix<double>.

	* cmake.

       * include/dynamic-graph/command-getter.h,
       * include/dynamic-graph/command-setter.h,
       * include/dynamic-graph/command.h,
       * include/dynamic-graph/entity.h,
       * include/dynamic-graph/value.h,
       * src/command/command.cpp,
       * src/command/value.cpp.

	     * src/CMakeLists.txt.

    * src/command/value.cpp.

	* include/dynamic-graph/command-setter.h,
	* include/dynamic-graph/command-setter.t.cpp,
	* include/dynamic-graph/value.h,
	* src/command/value.cpp: support bool, unsigned and float.

    * include/dynamic-graph/command-getter.h,
    * include/dynamic-graph/command-setter.h,
    * include/dynamic-graph/command.h.

     * include/dynamic-graph/command.h,
     * src/command/command.cpp.

    * include/dynamic-graph/value.h,
    * src/command/value.cpp.

    * include/CMakeLists.txt,
    * include/dynamic-graph/command-getter.h: new,
    * include/dynamic-graph/command-getter.t.cpp: new,
    * include/dynamic-graph/parameter.h: deleted.

    * include/CMakeLists.txt,
    * include/dynamic-graph/command-setter.h: new,
    * include/dynamic-graph/command-setter.t.cpp: new,
    * include/dynamic-graph/value.h.

	     * include/dynamic-graph/value.h,
	     * src/command/value.cpp.

    * include/dynamic-graph/command.h,
    * include/dynamic-graph/value.h
    * src/command/command.cpp,
    * src/command/value.cpp.

	  * include/CMakeLists.txt,
	  * include/dynamic-graph/command.h: new,
	* include/dynamic-graph/entity.h,
	* include/dynamic-graph/parameter.h: new,
	* include/dynamic-graph/value.h: new,
	* src/command/command.cpp: new,
	* src/command/value.cpp: new,
	* src/dgraph/entity.cpp.