Reapply fix for EXPORT_C problem in backend.dll, which got lost in the merge - bug 2971
using _STLP_NEW_IO_NAMESPACE::strstreambuf;using _STLP_NEW_IO_NAMESPACE::istrstream;using _STLP_NEW_IO_NAMESPACE::ostrstream;using _STLP_NEW_IO_NAMESPACE::strstream;