Added support ot perform a scan on demand.

Each module has its own memory module to handle its own parameters.

Added the dynamixel slave interface registers.

Updated the test example.

Added a function to read a register.
Updated the operations configuration of the motion manager.

Added a register mapping data structure for all he supported dynamixel families.

Renamed the delete variable to avoid problems in C++.

Added an scheduler object to the dynamixel manager to handle the periodic call of the main function.
Chnaged the period resolution to ms.
Solved a bug in the set_period() function call period.

Made the dynamixel_base and dynamixel manager libraries compatible with C and C++ adding the extern "C" tag.

Solved an issue with the inline functions.
Solved some type cast errors.

Multi slave

See merge request !7

Updated the dyn_manager and dyn_modules modules to use the new eeprom data structures and memory module version.

Removed the global ram_data variable. Added an independant data vector for each memory instance.

Used the individual memory data structure for each device.

All registers definitions and read/write functions in a single module.
Removed the low level hardware interface.
Added all the pattern modules.
Created a frame_buffer module to handle the associated memory.
Created a frame_buffer_control module to handle all patterns.

This pointer is passed as an argument to the callback function.