Re: stdioext OpenVMS patch.

[Bruno Haible]

Hi John,

> On OpenVMS, the struct _iobuf is needed to access members of the struct 
> FILE.
> 
> This is a patch for the affected stdioext modules to compile on OpenVMS.

The approach looks generally right, but I'd request a couple of changes
before this can go in:

  * Is _IOERR defined on OpenVMS? In some files, you treat OpenVMS
    as part of the _IOERR case, in others you do it before _IOERR. Which
    is not consistent.
    If _IOERR is defined on OpenVMS, please update all
      #elif defined _IOERR                /* AIX, HP-UX, IRIX, OSF/1, Solaris, 
OpenServer, mingw, MSVC, NonStop Kernel */
    lines to include OpenVMS at the end of the comment.

  * Instead of defining a variable 'stream', please using the same coding
    style as for the other platforms: use macro fp_ which is defined to
    a cast expression through lib/stdio-impl.h.

  * The fbufmode.c change has a regression for all non-Windows, non-OpenVMS
    platforms.

  * The freading.c change is misindented.

Bruno