Added line/column data for nodes so they can give better invalid scalar exceptions.
Added line/column data for nodes so they can give better invalid scalar exceptions.

--HG--
extra : convert_revision : svn%3Ade72303c-5753-0410-9a76-25d1066b02d0/trunk%4086

largerussiangames/yaml-cpp,largerussiangames/yaml-cpp-0.5,largerussiangames/yaml-cpp,argiopetech/yaml-cpp,jonatanolofsson/yaml-cpp,egocarib/yaml-cpp,largerussiangames/yaml-cpp,jfrabaute/yaml-cpp,argiopetech/yaml-cpp,egocarib/yaml-cpp,jonatanolofsson/yaml-cpp,jfrabaute/yaml-cpp,largerussiangames/yaml-cpp-0.5,egocarib/yaml-cpp,jfrabaute/yaml-cpp,argiopetech/yaml-cpp,largerussiangames/yaml-cpp-0.5