S/390: Enable libgcj for s390*-*-linux*

[Andrew Haley]

Ulrich Weigand writes:
 > 
 > Andrew Haley wrote:
 > 
 > >Out of interest, have you got a set of "make check" results for libgcj?
 > 
 > I've deleted the last set of results; once my next make check goes
 > though, I'll post them to gcc-testresults.
 > 
 > However, there were only three test case failures on s390(x): two cases
 > of PR1343 and one of Array_3 (there used to be three of the latter, but
 > two of them were fixed recently).

That's what I needed to know.

Thanks,
Andrew.