S390[x] configuration update

[Andrew Cagney]

>> http://sources.redhat.com/ml/gdb-patches/2002-04/msg01104.html
> 
> 
> Different interpretation of his phrasing, perhaps.

Just had another look, and still can't see a ``5.2 does not build'' 
anywhere :-)

>  But no GNU/Linux
> target that uses config/nm-linux.h can link without including
> linux-proc.o; I assume it was missed because the .mh file is named
> s390.mh instead of s390/linux.mh.  S/390 doesn't build in 5.2 without
> this patch.

M'kay, adding it to the 5.2 release notes.

s390, FreeBSD 4.4 and other stuff suggest a 5.2.1

enjoy,
Andrew