[MiNT] towupper()?

[Vincent Rivière <vincent.riviere@freesbee.fr>]

Hello.

I tried to rebuild my old coreutils 8.5:
http://vincent.riviere.free.fr/soft/m68k-atari-mint/archives/mint/coreutils/

But it failed because towupper() was declared but not defined.

Unless I'm wrong, towupper() is declared in include/wctype.h, but not 
defined anywhere in the MiNTLib.

See the attached testcase.

--
Vincent Rivière

#include <wctype.h>

wint_t r;

int main(void)
{
    r = towupper(L'A');

    return 0;
}