[PING][Patch]: multilib fixes for libjava

[Paolo Bonzini]

> Lest anyone think this is waiting on me, let me say that I have no
> problem with this.  It is for Darwin maintainers to comment.
> But they won't see it, because Darwin does not appear in the Subject
> line and libjava does.

It actually affects any multilibbed target that builds libjava.  I don't 
think Darwin maintainers could approve the patch, actually.

Paolo