* filebuf.cc (filebuf::open): Call _IO_file_open if
_G_HAVE_IO_FILE_OPEN is 1.
* libio.h (_IO_fpos64_t, _IO_off64_t): Defined if
_G_IO_IO_FILE_VERSION == 0x20001.
* libioP.h (_IO_file_open): New declaration.
* libio.h (_IO_FILE, _IO_stdin_, _IO_stdout_, _IO_stderr_,
_IO_seekoff, _IO_seekpos): Add support for libio in egcs 2.1.
* libioP.h (_IO_seekoff_t, _IO_seekpos_t, _IO_seek_t,
_IO_seekoff, _IO_seekpos, _IO_default_seekoff,
_IO_default_seekpos, _IO_default_seek, _IO_file_seekoff,
_IO_file_seek, _IO_str_seekoff, _IO_pos_BAD, _IO_pos_as_off,
_IO_pos_0): Ditto.
* streambuf.h (streamoff, streampos): Ditto.
* gen-params (__extension__): Use only if gcc version >= 2.8.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@17580
138bc75d-0d04-0410-961f-
82ee72b054a4