g_pool and g_factory global variables have been replaced by static methods
    getInstance in each class.
    getInstance returns a pointer to the unique instance of the class and
    creates it if needed.

	  * 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.

	  * include/dynamic-graph/signal-base.h,
	  * include/dynamic-graph/signal-ptr.h,
	  * include/dynamic-graph/signal-ptr.t.cpp,
	  * include/dynamic-graph/time-dependency.h,
	  * include/dynamic-graph/time-dependency.t.cpp,
	  * src/dgraph/entity.cpp, dependancy -> dependency,
	  * unitTesting/test_depend.cpp: makes the test_depend.cpp test works.

Merge the florent branch.
Makes the test_depend.cpp test works.

(dynamicGraph/ -> dynamic-graph/)

Configured dynamicGraph package and cmake files. Last-minute adjustment to code for SOT separation (SOT Break)