Signal handling rewrite for Linux / i386

[Tom Tromey]

>>>>> "Andrew" == Andrew Haley <aph@redhat.com> writes:

Andrew> It's a good idea to allow threads to be variable in size.  I
Andrew> welcome suggestions for a good mechanism.

We could add a system property to set the stack size.
Then users could control this via the `gij' or `gcj' command lines.
This is a different kind of variability than what glibc provides, but
maybe it would suffice.

Tom