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.

	* dynamic-graph-API.h -> dynamic-graph-api.h.

The package name is now dynamic-graph (this still needs to be changed in the git repository). Updated source files to reflect that change. Clarified CMakeLists, explicited cpp source files for libraries.

Shell (ok)
Factory (currently needs sotGainAdaptive to compile, will change to another entity soon)

(dynamicGraph/ -> dynamic-graph/)

For example, maal, was not needed.

Type in symbol dgDEBUGFLOW resulted in not being able to load shared libraries. Fixed. Preliminary documentation changes. Re-added INSTALL file.

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