The BIG change of general operator interface

I also changed
  - the eoQuadratic into eoQuad (as dicussed with Maarten)
  - the eoBin into eoBit, with more appropriate names for the "binary"
    operators (that can be unary!) as no one protested when I posted on
    eodev list

eo/tutorial/Lesson1/FirstRealGA.cpp

@@ -13,11 +13,10 @@
 // the general include for eo
 
 #include <eo>
+#include <es.h>
 
 // REPRESENTATION
 //-----------------------------------------------------------------------------
-// Include the corresponding file
-#include <es.h>	         // real-representation & operators
 // define your individuals
  typedef eoReal<double> Indi;