fix more warnings

eo/test/t-eoExtendedVelocity.cpp

@@ -16,7 +16,7 @@ double f (const Particle & _particle)
     return (-sum);
 }
 
-int main_function(int argc, char **argv)
+int main_function(int /*argc*/, char **/*argv*/)
 {
 	const unsigned POP_SIZE = 6, VEC_SIZE = 2, NEIGHBORHOOD_SIZE=2;
 

eo/test/t-eoPartiallyMappedXover.cpp

@@ -22,7 +22,7 @@ int main() {
   sol1.resize(9);
   sol2.resize(9);
 
-  for(int i = 0; i < sol1.size(); i++)
+  for(size_t i = 0; i < sol1.size(); i++)
     sol1[i] = i;
 
   sol2[0] = 3;
@@ -46,23 +46,23 @@ int main() {
   std::cout << sol2 << std::endl;
 
   int verif[9];
-  for(int i = 0; i < sol1.size(); i++)
+  for(size_t i = 0; i < sol1.size(); i++)
     verif[i] = -1;
 
-  for(int i = 0; i < sol1.size(); i++)
+  for(size_t i = 0; i < sol1.size(); i++)
     verif[ sol1[i] ] = 1;
 
-  for(int i = 0; i < sol1.size(); i++)
+  for(size_t i = 0; i < sol1.size(); i++)
     assert(verif[i] != -1);
 
 
-  for(int i = 0; i < sol2.size(); i++)
+  for(size_t i = 0; i < sol2.size(); i++)
     verif[i] = -1;
 
-  for(int i = 0; i < sol2.size(); i++)
+  for(size_t i = 0; i < sol2.size(); i++)
     verif[ sol2[i] ] = 1;
 
-  for(int i = 0; i < sol2.size(); i++)
+  for(size_t i = 0; i < sol2.size(); i++)
     assert(verif[i] != -1);
 
   std::cout << "[t-eoPartiallyMappedXover] => OK" << std::endl;

eo/test/t-eoRingTopology.cpp

@@ -16,7 +16,7 @@ double f (const Indi & _indi)
     return (-sum);
 }
 
-int main_function(int argc, char **argv)
+int main_function(int /*argc*/, char **/*argv*/)
 {
 	//Parameters
     const unsigned int VEC_SIZE = 2;

eo/test/t-operator-forge.cpp

@@ -8,6 +8,7 @@ struct OpInterface
     std::string _name;
     OpInterface(std::string name) : _name(name) {}
     virtual void operator()() = 0;
+    virtual ~OpInterface() {}
 };
 
 struct OpA : public OpInterface