Support in AnalysisTop for MC samples with data overlay

This is a first attempt to provide support for running AnalysisTop on MC samples with data overlay. A isDataOverlay flag is introduced, read from metadata and the PRW tool is switched off once isDataOverlay=true. Details discussed in ATLASG-1556

Best regards, Iwona

PhysicsAnalysis/TopPhys/xAOD/TopConfiguration/Root/TopConfig.cxx

@@ -3808,7 +3808,7 @@ namespace top {
   void TopConfig::ReadIsDataOverlay(top::ConfigurationSettings* const& settings) {
     if (settings->value("IsDataOverlay") == "True") this->setIsDataOverlay(true);
     else if (settings->value("IsDataOverlay") == "False") this->setIsDataOverlay(false);
-    else if (settings->value("IsADataOverlay") != " ") throw std::runtime_error(
+    else if (settings->value("IsDataOverlay") != " ") throw std::runtime_error(
               "TopConfig: option IsDataOverlay must be either True or False");
   }