wprintf is not a new ISO C99 function

[Martin v. Loewis]

> All these functions have been part of the C89 standard since amendment 1
> (1994). 

The understanding is that glibc does not explicitly support Amd1, so
it's either C89 or C99.

> They are NOT new additions to ISO C99 and should therefore be added
> unconditionally by default. If someone adds #include <wchar.h> to her
> source code, then she will most definitely also want to have these old
> functions included.

That is a good point, though - why should anything in wchar.h be
conditional on C99?

Regards,
Martin