use 3-arg signal handlers when SA_SIGINFO flag is set

[Christopher Faylor]

On Sun, Sep 25, 2005 at 09:26:53PM -0700, Yitzchak Scott-Thoennes wrote:
>I've done some but not a lot of testing with this patch.  In
>particular, I'm not sure that the tls field infodata always is set for
>all kinds of signals.

I've applied this patch.  Thanks.

>In exceptions.cc handle_exceptions, si_sigval is being set to various
>things that should be put in si_code instead (and si_code is set to
>SI_KERNEL).  I haven't changed this yet, and would appreciate someone
>else confirming that it should change (or explaining why it shouldn't).

Yes, this was wrong.  I think I've changed the si_sigval's to si_code's
where appropriate now, in CVS.

cgf