c_io_libio.h: Tweak.

c_io_libio.h: Tweak.

2000-08-08  Benjamin Kosnik  <bkoz@cygnus.com>
	    Ulrich Drepper  <drepper@cygnus.com>

	* config/c_io_libio.h: Tweak.
	* config/c_io_libio_codecvt.c: New file.
	* libio/Makefile.am: Add c_codecvt.c.
	* libio/Makefile.in: Regenerate.
	* libio/genops.c (_IO_unbuffer_write): Don't call _IO_SETBUF if the
	stream is not orientated.

	* acinclude.m4: Add config/c_io_libio_codecvt.c dummy file, until
	encoding gets fleshed out.

	* bits/basic_file.h: Add specialization declarations.
	* config/c_io_libio.cc: Add specializations for pbackfail, uflow.

	* config/c_io_libio.h: Add __c_wfile_type.
	* bits/basic_file.h: Add _M_wfile.

	* config/c_io_libio.cc (__basic_file<char>): Initialize the
	streams without setting the orientation of the underlying FILE to
	either wide or narrow.
	(__basic_file<wchar_t>)): Enable tricky wchar_t io bits.

From-SVN: r35583