GCCE fixes (Bug 2971) : Remove IMPORT_C statements in ext_dat.h as these are not necessary within same module and cause "not constant" error with GCCE
#ifdef _STLP_BROKEN_USING_DIRECTIVE
using namespace _STLP_STD;
#else
using _STLP_NEW_IO_NAMESPACE::basic_filebuf;
using _STLP_NEW_IO_NAMESPACE::filebuf;
using _STLP_NEW_IO_NAMESPACE::basic_ifstream;
using _STLP_NEW_IO_NAMESPACE::basic_ofstream;
using _STLP_NEW_IO_NAMESPACE::ifstream;
using _STLP_NEW_IO_NAMESPACE::ofstream;
using _STLP_NEW_IO_NAMESPACE::basic_fstream;
using _STLP_NEW_IO_NAMESPACE::fstream;
# ifndef _STLP_NO_WIDE_STREAMS
using _STLP_NEW_IO_NAMESPACE::wofstream;
using _STLP_NEW_IO_NAMESPACE::wfilebuf;
using _STLP_NEW_IO_NAMESPACE::wifstream;
using _STLP_NEW_IO_NAMESPACE::wfstream;
# endif
#endif