Doing libes.a in src/es and adding t-eoReal.cpp in test

I had to move eoRealBounds to utils dir because of global objects
Some domino consequences here and there ...

eo/src/utils/eoRealBounds.cpp

@@ -0,0 +1,7 @@
+#include <ctime>
+#include "eoRealBounds.h"
+
+// the global dummy bounds 
+// (used for unbounded variables when bounds are required)
+eoRealNoBounds eoDummyRealNoBounds;
+eoRealVectorNoBounds eoDummyVectorNoBounds;