Use relative includes in headers and absolute in code

- relative includes in headers
- absolute includes in exe code
- include sstream lib in eoExceptions.h
- fix ga/make_op_ga.cpp
- fix eoSGATransform.h

eo/src/eoAlgo.h

@@ -25,8 +25,8 @@
 #ifndef _EOALGO_H
 #define _EOALGO_H
 
-#include <eoPop.h>                   // for population
-#include <eoFunctor.h>
+#include "eoPop.h"     // for population
+#include "eoFunctor.h"
 
 /**
   @defgroup Algorithms Algorithms