Reapply fix for EXPORT_C problem in backend.dll, which got lost in the merge - bug 2971
using _STLP_NEW_IO_NAMESPACE::setiosflags;
using _STLP_NEW_IO_NAMESPACE::resetiosflags;
using _STLP_NEW_IO_NAMESPACE::setbase;
using _STLP_NEW_IO_NAMESPACE::setfill;
using _STLP_NEW_IO_NAMESPACE::setprecision;
using _STLP_NEW_IO_NAMESPACE::setw;