bootstrap broken on mingw

[Ralf Wildenhues]

* Weddington, Eric wrote on Sun, Feb 17, 2008 at 11:08:58PM CET:
> 
> No it wouldn't. I don't understand why reverting the patch would cause
> havoc. The 20080208 snapshot built just fine, even with an old texinfo
> version. I'd rather go back to that behaviour.

It didn't for me, with texinfo 4.8, nor for the reporter of PR 35148, as
'make pdf' failed.  I have not investigated the cause of that bug
further, but I suppose it's a texinfo issue (that maybe exists only in
some texinfo releases?)

> I'm tyring out your new patch now...

Thanks.  BTW, if it works, OK for trunk and 4.2?  If that does not work,
then I will revert the breaking patch first thing tomorrow morning (UTC).

Cheers,
Ralf