gnu/gcj/io/shs.cc doesn't compile on Solaris 2.5.1 (bootstrap failure)

[Rainer Orth]

Anthony Green writes:

> I think we decided it would be OK to for the mode of the integer with a
> type attribute.   This is what I need for newlib targets as well (like
> xscale-elf).

right, this is exactly what java/lang/mprec.h does (as already noted in
the PR libgcj/5944.  I just don't have a good idea where to move this stuff
so it can be used both by java/lang and shs.h.

	Rainer