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/eoPopEvalFunc.h

@@ -27,15 +27,15 @@
 #ifndef eoPopEvalFunc_H
 #define eoPopEvalFunc_H
 
-#include <eoEvalFunc.h>
-#include <apply.h>
+#include "eoEvalFunc.h"
+#include "apply.h"
 
 # ifdef WITH_MPI
-#include <mpi/eoMpi.h>
-#include <mpi/eoTerminateJob.h>
-#include <mpi/eoMpiAssignmentAlgorithm.h>
-#include <mpi/eoParallelApply.h>
-#include <utils/eoParallel.h>
+#include "mpi/eoMpi.h"
+#include "mpi/eoTerminateJob.h"
+#include "mpi/eoMpiAssignmentAlgorithm.h"
+#include "mpi/eoParallelApply.h"
+#include "utils/eoParallel.h"
 
 #include <cmath> // ceil
 # endif // WITH_MPI