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/utils/eoRNG.h

@@ -50,8 +50,9 @@ typedef unsigned long uint32_t;
 
 #include <cmath>
 #include <vector>
-#include "eoPersistent.h"
-#include "eoObject.h"
+// Relative includes
+#include "../eoPersistent.h"
+#include "../eoObject.h"
 
 
 /** Random Number Generator