add explicit copy-constructors

implicitly generated copy constructors are deprecated in C++11,
if the class already has an assignment operator.

quells warnings with modern gcc/clang.

opm/parser/eclipse/EclipseState/Tables/TableColumn.hpp

@@ -34,6 +34,8 @@ namespace Opm {
         TableColumn();
         explicit TableColumn( const ColumnSchema& schema );
 
+        TableColumn(const TableColumn& c2) { *this = c2; }
+
         static TableColumn serializeObject();
 
         size_t size( ) const;

opm/parser/eclipse/EclipseState/Tables/TableManager.hpp

@@ -69,6 +69,8 @@ namespace Opm {
         explicit TableManager( const Deck& deck );
         TableManager() = default;
 
+        TableManager(const TableManager& t2) { *this = t2; }
+
         static TableManager serializeObject();
 
         TableManager& operator=(const TableManager& data);