* libio.h (_IO_cookie_io_functions_t): Use _IO_off_t instead of
	_IO_fpos_t.
	(_IO_seekoff, _IO_seekpos): Likewise. Use _IO_off64_t instead of
	_IO_fpos64_t.
	* libioP.h (_IO_seekoff_t, _IO_seekpos_t, _IO_seek_t): Likewise.
	(_IO_seekoff, _IO_seekpos): Likewise.
	(_IO_default_seekoff, _IO_default_seekpos): Likewise.
	(_IO_default_seek): Likewise.
	(_IO_file_seekoff, _IO_file_seek, _IO_str_seekoff): Likewise.
	* streambuf.h (streampos): Typedef to _IO_off_t resp. _IO_off64_t.
	* parsestream.h (class parsebuf::pos_at_line_start): Change type
	to _IO_off_t.

From-SVN: r31068