[Ada] Building gnatdll.exe on MinGW32

[Zack Weinberg]

On Sun, Dec 09, 2001 at 04:48:44AM -0500, obry@gnat.com wrote:
> Ok, I'm not a Makefile expert but I think that the rules for mdllfile.o and
> mdlltool.o should be put into ada/Makefile.in.

He did.  The only thing that went into Make-lang.in was the trigger
rule for gnatdll.

> Make-lang.in is integrated into the main GCC makefile which is not
> the place for these rules.

Not entirely true, but that's for a separate change.

zw