Added private assignment operator to fix VS2010 issue

- thanks to Kosta (#239)

include/reporters/catch_reporter_bases.hpp

@@ -99,6 +99,8 @@ namespace Catch {
                 return node->stats.sectionInfo.lineInfo == m_other.lineInfo;
             }
         private:
+            BySectionInfo& operator=( BySectionInfo const& other ); // = delete;
+
             SectionInfo const& m_other;
         };