tracer-real-time needs tracer.lib

The correct .so files for the plugins are now generated.

	  * 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.

	    * signal-time-dependent.h: new.

	 * contiifstream.h: re-indent and remove trailing white spaces.

     * include/dynamic-graph/contiifstream.h,
     * src/debug/contiifstream.cpp.

     Otherwise, the package does not compile in debug mode.

API to access framework functions without sotInterpreter.
Should ease the port to more complex interpreters without favoring
the internal interpreter. The latter one is here for backward
compatibility. It will be removed.

This version compile but might not work yet.
(not tested).

    * src/CMakeLists.txt.

	* src/CMakeLists.txt,
	* src/plugins/shell-functions.cpp,
	* src/plugins/shell-functions.cpp -> src/shell/functions.cpp.

       * src/CMakeLists.txt.

	 * src/CMakeLists.txt.

    * CMakeLists.txt: build doc by default,
    * doc/package.dox.cmake: headers are now in include directory.

Added unit test of the signal casting facility. Not exporting the SignalCastRegister class anymore (inlined in the .h).

* New class SignalCaster
* Re-added the get, set and trace commands to signals

- signals dependency testing
- factory testing (needs some SOT shared libraries to work though)

Renamed dynamic-graph-API.h to dynamic-graph-api.h in every header file.