Removes memory leaks on the parse

- Parser location is now a custom class. It holds a shared pointer
  with the file name; If the parser fails, the resource is deleted.

 - To follow the parser change, the Rule class now holds the file
  name in a shared pointer instead of a unique pointer. As a shared
  pointer we avoid duplication of the file name in memory, plus,
  it frees itself when not in use anymore.

 - Operator init also accepting the filename as a shared pointer.

 - Driver is treating m_location was privative. Now it holds a
  std::list<std::shared_ptr<yy::seclang_parser::location_type>>
  instead of: std::list<yy::seclang_parser::location_type *>.

 - Fix: addSecRule on Driver() was changed from RuleWithAction to
  RuleWithOperator.

 - Minor changes on the regression and rules-check utility to force
  deletion of resources even when they fail.

 - Couple of virtual destructors were placed to force the shared
  pointer decrementing on shared variables.

 - Deleted constructors for copy were placed for the sake of
  readability.

tools/rules-check/rules-check.cc

@@ -41,7 +41,7 @@ int main(int argc, char **argv) {
 
     if (*args == NULL) {
         print_help(argv[0]);
-        return 0;
+        goto ret;
     }
 
     while (*args != NULL) {
@@ -90,19 +90,22 @@ int main(int argc, char **argv) {
         std::cout << "Loaded " << std::to_string(r) << " rules." << std::endl;
         if (err.empty() == false) {
             std::cerr << "    " << err << std::endl;
+            goto end;
         }
         rules->dump();
 next:
         args++;
     }
 
-    delete rules;
-
+end:
     if (ret < 0) {
         std::cout << "Test failed." << std::endl;
     } else {
         std::cout << "Test ok." << std::endl;
     }
 
+ret:
+    delete rules;
+
     return ret;
 }