oskit-mach vs gcc-3.2 -O2

[Roland McGrath]

Btw, I tried compiling oskit-mach using gcc-3.2 (actually RH's 3.2-7) and
it is fine with -O but breaks with -O2.  I haven't looked into it, but it
shouldn't be too hard to fix (once found) since there aren't dozens of
places like drivers to worry about, just a relatively small about of
asm-in-C stuff that might need tweaks.

My oskit is built with the same compiler, using -O.  I haven't tried
building the oskit with -O2.  That may be a real pain because of the
old Linux drivers.