Patch: work around recent shs.h change

[Tom Tromey]

>>>>> "Anthony" == Anthony Green <green@redhat.com> writes:

Tom> What if we instead use the code in java/lang/mprec.h?  I had a
Tom> vague recollection that we already dealt with this problem.

Anthony> I don't like that solution because it assumes SI mode things
Anthony> are 32-bits and may fail silently if this isn't the case
Anthony> (like on 16-bit ports).

I was poking at gcc a bit today and I found this in the manual:

    `SImode'
	 "Single Integer" mode represents a four-byte integer.

Maybe the comments in mprec.h are wrong, and SI is always 32 bits.
In that case using this approach is always safe.

Tom